60° triangle can be calculated in radians as π/3 radians.
60 degree angle is an acute angle in geometry and is expressed as π/3 in radians. Each angle in an equilateral triangle is equal to 60 degrees.
A 60-degree angle is an acute angle since angles less than 90 degrees are considered acute. In the case of a geometric angle, the arc is confined by the sides and is centered at the vertex. When rotated, the arc is centered in the center of rotation and is limited to any other point and its image.
Thus, 60° triangle can be calculated in radians as π/3 radians.
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What is the sum rule in integration?.
∫(f(x) + g(x)) dx = ∫f(x) dx + ∫g(x) dx is the sum rule in integration.
The sum rule in integration states that if f(x) and g(x) are two functions that are both integrable over a given interval, then the integral of the sum of these functions over that interval is equal to the sum of the integrals of the individual functions over that interval. Mathematically, this can be expressed as:
∫(f(x) + g(x)) dx = ∫f(x) dx + ∫g(x) dx
The sum rule of integration is: Integral of the sum of two functions is equal to the sum of integration of individual functions.
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What transformation has changed the parent function f(x) = (0.5)x to its new appearance shown in the graph? exponential graph passing through point negative 3, 2 and negative 2, 1 a f(x) − 2 b f(x + 2) c f(x) + 1 d −1 • f(x)
Correct option is A, f(x) -2 has changed the parent function f(x) = (0.5)x to its new appearance.
What modification has caused the parent function to change?The parent function f(x) = log5x has been modified by reflecting it over the x-axis, extending it vertically by a factor of three, and moving it down by three units.
In the picture below you can see the blue line is the graph of the function
f(x) = log(5x) and the green line is the graph of the function
g(x) = log[5(x + 4)] - 2
Since the function f passes at point (2, 1), we must reduce it by 2 units to ensure that it also passes at position (-2, -1). To do this, we add 2 to the function f.
We only need to add 4 to the variable x to have the function go left when we obtain log(5x) - 2.
The function shifts to the left when you add a number to x;
The function moves to the right when you remove a number from x;
The function increases when you add a number to it;
The function decreases when you take a number away from it.
Then we get a function g(x) = log[5 (x + 4)] - 2.
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Write an algebraic expreion that repecent the um of y to the fifth power and eleven
The given expression is expressed in an algebraic expression as: y^5 + 11
What is an equation?An equation is the equality between two algebraic expressions, which have at least one unknown or variable.
In mathematics, when we express “sum” we mean an addition. So the expression "the sum of y... and eleven" is represented by:
y + 11
When we refer "fifth power" we mean an exponent equal to five. So the expression “y to the fifth power” is represented by:
y^5
The complete expression "the sum of y to the fifth power and eleven" in an algebraic expression represented by: y^5 + 11
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Correctly written question:
Write an algebraic expression that represent the sum of y to the fifth power and eleven
How do you find the sine of an angle in a right triangle?.
To find the sine of an angle in a right triangle, we can use the following relationship:
[tex]sin(angle) = opposite side / hypotenuse\\[/tex]
What is right triangle?
A right triangle is a type of triangle that has one angle that measures exactly 90 degrees (also known as a right angle). This angle is formed by the intersection of two legs of the triangle, which are not the hypotenuse of the triangle. The side opposite the right angle is called the hypotenuse and it is always the longest side of the triangle.
To find the sine of an angle in a right triangle, you can use the following relationship:
[tex]sin(angle) = opposite side / hypotenuse\\[/tex]
This relationship holds true for any angle in a right triangle, not just the acute angles.
For example, if you have a right triangle with an angle of 30 degrees and the opposite side is 5 units and the hypotenuse is 12 units, you can find the sine of the angle by dividing the opposite side by the hypotenuse:
[tex]sin(30) = 5/12 = 0.4166\\[/tex]
It's also important to note that the sine of an angle is always between -1 and 1, and the sine of an acute angle is always positive.
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To find the sine of an angle in a right triangle, we can use the following relationship:
sine = opposite side / hypotenuse side
What is right triangle?
A right triangle is a type of triangle that has one angle that measures exactly 90 degrees (also known as a right angle). This angle is formed by the intersection of two legs of the triangle, which are not the hypotenuse of the triangle. The side opposite the right angle is called the hypotenuse and it is always the longest side of the triangle.
To find the sine of an angle in a right triangle, you can use the following relationship:
sine = opposite side / hypotenuse side
This relationship holds true for any angle in a right triangle, not just the acute angles.
For example, if you have a right triangle with an angle of 30 degrees and the opposite side is 5 units and the hypotenuse is 12 units, you can find the sine of the angle by dividing the opposite side by the hypotenuse:
sin(30) = 5/12 = 0.4166
It's also important to note that the sine of an angle is always between -1 and 1, and the sine of an acute angle is always positive.
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What are the law of exponential and logarithmic function?.
The law of exponential and logarithmic function is that the logarithmic functions are the inverses of the exponential functions.
According to the first law, we can multiply two exponential functions with the same base by adding their respective exponents. According to the second law, the exponents must be subtracted in order to divide two exponential functions with the same base.
According to the third law, we must multiply the exponents in order to raise a power to a new power. According to the fourth and fifth laws, we must raise each factor to the same power in order to raise a product or quotient to that power.
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To produce function g, function f was reflected over the x-axis and. Function g is defined as.
To produce g, function was reflected over the x-axis and | shifted up 3 units . Function g can be defined as g(x)=f(x-1)+4.
What is axis ?
An axis is a straight line around which an object or a geometric shape can rotate or be symmetrical. In a coordinate system, an axis is a line that serves as a reference for the location of points in space.
When a function f(x) is reflected over the x-axis, it changes the sign of the y-coordinate values. By reflecting the graph of f(x) over the x-axis, the new function g(x) will have the same shape as f(x) but with all y-coordinate values inverted.
Additionally, by shifting the function up 3 units, it means that the y-coordinate values of the new function g(x) will be 3 units greater than the y-coordinate values of the original function f(x).
So the transformation can be represented as:
g(x) = f(x-1) + 4
It is the horizontal shift of 1 unit to the right, and a vertical shift of 3 units up
To produce g, function was reflected over the x-axis and | shifted up 3 units . Function g can be defined as g(x)=f(x-1)+4.
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Determine the degree of the following polynomial: -7xy^3z^2
Answer:
The given expression is -7xy^3z^2
The degree of x is 1
The degree of -7 is 0
The degree of y^3 is 3
The degree of z^2 is 2
The degree of a polynomial is the highest exponent of its variables. In the case of the polynomial -7xy^3z^2, the degree is the highest exponent among x, y, and z.
The highest exponent is 3, which is the exponent of y. So the degree of the polynomial -7xy^3z^2 is 3.
It's worth noting that the coefficient -7 has no effect on the degree of the polynomial. The degree of a polynomial is determined by the exponents of its variables, not its coefficients.
The port lavca fihing pier i 3200 feet long. There i one peron fihing for each ten feet of length. Write and olve an equation to find how many people are fihing from the peir
320 peoples are fishing for their peir.
What is equation?A statement that demonstrates the link between various variables using mathematical processes is called an equation. It is applied to problem-solving and forecasting. The same relationship can be expressed in an equation in a number of ways, and it can be used to obtain the value of an unknown variable by setting it to a known value.
length of fishing pier 3200 feet
Requirement of one person = 10 feet
so the let x person can accomodate in the given length
so 10 * x =3200
so , x = 3200/10
=> x =320
so 320 are fishing for their pier.
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What is the difference between the largest 5 digit number and smallest 6 digit number?.
The difference between the largest 5-digit number and the smallest 6-digit number is 1.
The aim is to find the largest 5-digit and the smallest 6-digit numbers, and then we need to identify the difference between these two values.
Let's start by finding the smallest 6-digit number.
We know that 0 is the smallest digit that can not be used in the highest place value, so we will consider the next smallest digit; that is, 1 and 1 can be used in the highest place value.
Thus, we can create the required 6-digit smallest number with 0 and 1.
Hence, the smallest 6-digit number is 100000.
Now, we will discover the largest 5-digit number.
As we know, the largest digit is 9, which can be used anywhere. So, we will form the largest 5-digit number with the digit 9.
Thus, the largest 5-digit number is 99999.
Next, we need to find the difference between these two values.
So, we can determine the difference between the smallest 6-digit number and the largest 5-digit number by subtracting the smallest from the largest.
Thus, we get,
⇒100000 - 999999
⇒1
Hence, 1 is the difference between the smallest 6-digit and the largest 5-digit numbers.
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If AB = 12, then A’B’ =
The solution is, A’B’ = 12 units, when AB = 12.
What is transformation?A transformation is a dramatic change in form or appearance. An important event like getting your driver's license, going to college, or getting married can cause a transformation in your life. A transformation is an extreme, radical change.
here, we have,
Given
Line segment AB = 12 units
Translation of AB → A'B' by the rule T(x +0, y+5)
This translation won't change the length of A'B' as the difference in (x2-x1) and (y2-y1) stays same
because x-coordinate stays as is and y-coordinate's change cancelled when subtracting.
So, A'B' = 12 units.
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Solve 4a^4 - 8a^2+4 = 0 for a and list all of the solutions. Explain how you got your answer.
[tex]4a^4-8a^2+4=0\implies 4(a^4-2a^2+1)=0\implies a^4-2a^2+1=0 \\\\\\ (a^2)^2-2a^2+1=0\implies (a^2-1)(a^2-1)=0\implies a^2=1 \\\\\\ a=\pm\sqrt{1}\implies a=\pm 1[/tex]
31.002 in expanded form
Answer: 30+1+.002
Step-by-step explanation:
Just break it up into number groups. Like tens, ones, or hundreds
Pleae anwer any number if you can, anwer will be reported if it i nonene. 1. (-8-6-5)-(-25-4-9)=
2. (-2614-26)-(-88-12)=
3. (14-23-12)-(15-15-12)=
4. (-16-813)-(-2119-12)=
5. (-1316-15)-(-16-1123)=
6. (19-29-39)-(21-2223)=
7. (-20-2131)-(331232)=
8. (-5022-34)-(32-16-24)=
9. (14-25-19)-(-483541)=
10. (-2934-67)-(634651)=
All questions are solved using BODMAS rule.
BODMAS stands for Brackets, Orders (of operations), Division, Multiplication, Addition, and Subtraction. It is a commonly used acronym in mathematics to remember the order in which mathematical operations should be performed. When solving mathematical expressions, operations within brackets should be done first, followed by any exponents or roots.
Next, perform any divisions or multiplications from left to right, followed by any additions or subtractions from left to right. This order ensures that the expression is evaluated correctly and avoids confusion or errors.
(-8-6-5)-(-25-4-9) = -24 - -38 = 14(-2614-26)-(-88-12) = -2640 - -100 = -2540(14-23-12)-(15-15-12) = -11 - -12 = 1(-16-813)-(-2119-12) = -829 - -2131 = -298(-1316-15)-(-16-1123) = -1331 - -1139 = -192(19-29-39)-(21-2223) = -50 - -2202 = -2152(-20-2131)-(331232) = -2151 - 331232 = -332383(-5022-34)-(32-16-24) = -5056 - -8 = -5048(14-25-19)-(-483541) = -30 - -483541 = -483571(-2934-67)-(634651) = -3001 - 634651 = -637652Lear more about bodmas:
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ABCD is a parallelogram. Solve for m_BCA:
A
D
39°
107°
B
с
Can somebody pls answer this question and give a brief explanation on what to do so I can try to understand it a little more?
While the moving platform rotates, the shape of the quadrilateral ABCD does not change, only its shape. Therefore, ABCD is a parallelogram by the Parallelogram Opposite Sides Converse because both pairs of opposite sides are congruent. A parallelogram has the following dimensions: — AB — DC.
What is Parallelogram?An amusement park ride includes four swinging arms and a moving platform.The platform swings back and forth, getting higher and higher, until it crosses the top and circles. AD and BC are two of the swinging arms, and DC is parallel to the ground (line l). Why does the movable platform AB always remain parallel to the ground?While the moving platform rotates, quadrilateral ABCD's shape changes, but its side lengths remain constant. Because the Parallelogram Opposite Sides Converse shows that both sets of opposite sides are congruent, ABCD is a parallelogram.A parallelogram is defined as AB DC —. The Transitive Property of Parallel Lines states that while DC and AB are parallel to line, they are also parallel . This means that the moving platform is parallel to the ground.The Complete Question is Parallelogram.
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Alex purchased 29 4 x 6 prints in 16 5 x 7 prints from an online printing service and paid $22.89. if 5 x 7 prints cost $.84 more than 4 x 6 prints, how much does a 5 x 7 print cost?
The amount of money that Alex will use to purchase the 5 x 7 print would be = $11.89.
What is online printing service?An online printing service is the service that is rendered online that helps interested individuals to prepare their printed paper works.
The number of 4 x 6 prints(X) purchased by Alex = 29
The number of 5 x 7 prints (y) purchased by Alex = 16
The total amount he paid for the whole service = $22.89
The cost of 5 x 7 prints can be calculated using this expression;
22.89 - 0.84 = 22.05/2 = 11.025
Therefore the cost of 5×7 prints = 11.05+ 0.84 = $11.89.
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Solve each equation and please answer like (x,y) x=smaller number y=larger number:
1: x(x-32)=0
2: (y-3) (y+2) =0
3: (2y+5)(y-4)=0
4: 2z^2+20z=0
5: 9x^2 =27x
Quadratic equations' solutions are x=0, x=32 , y=3, y=-2 , [tex]y=-\frac{5}{2}, y=4$$[/tex] , z=0, z=-10 , and x=0, x=3
What is the quadratic equation ?[tex]$$x(x-32)=0 \quad: \quad x=0, x=32$$[/tex]
Steps
x(x-32)=0
If a b=0, then either a=0 or b=0, according to the Zero Factor Principle.x=0 or x-32=0
Solve x-32=0: x=32
The following are the quadratic equation's solutions:
x=0, x=32
2 . [tex]$$(y-3)(y+2)=0 \quad: \quad y=3, y=-2$$[/tex]
Steps
(y-3)(y+2)=0
If a b=0, then either a=0 or b=0, according to the Zero Factor Principle. y-3=0 or y+2=0
Solve y-3=0 : y=3
Solve y+2=0 : y=-2
The following are the quadratic equation's solutions:
y=3, y=-2
3. [tex](2 y+5)(y-4)=0 \quad: \quad y=-\frac{5}{2}, y=4$$[/tex]
Steps
(2 y+5)(y-4)=0
If a b=0, then either a=0 or b=0, according to the Zero Factor Principle. 2 y+5=0 or y-4=0
Solve 2 y+5=0: y=-[tex]\frac{5}{2}[/tex]
Solve y-4=0 : y=4
The following are the quadratic equation's solutions:
[tex]y=-\frac{5}{2}, y=4$$[/tex]
4.[tex]$$2 z^2+20 z=0 \quad: \quad z=0, z=-10$$[/tex]
steps
[tex]$$2 z^2+20 z=0$$[/tex]
The following are the quadratic equation's solutions:
[tex]$$z_{1,2}=\frac{-20 \pm \sqrt{20^2-4 \cdot 2 \cdot 0}}{2 \cdot 2}$$$$\sqrt{20^2-4 \cdot 2 \cdot 0}=20$$$$z_{1,2}=\frac{-20 \pm 20}{2 \cdot 2}$$[/tex]
Distinguish the answers
[tex]$$\begin{aligned}& z_1=\frac{-20+20}{2 \cdot 2}, z_2=\frac{-20-20}{2 \cdot 2} \\& z=\frac{-20+20}{2 \cdot 2}: 0 \\& z=\frac{-20-20}{2 \cdot 2}:-10\end{aligned}$$[/tex]
The following are the quadratic equation's solutions:
z=0, z=-10
5 .
[tex]$$\begin{aligned}& 9 x^2=27 x: x=0, x=3 \\& \text { Steps } \\& 9 x^2=27 x\end{aligned}$$[/tex]
Move 27 x to the left side
[tex]$$9 x^2-27 x=0$$[/tex]
[tex]$$\begin{aligned}& \text { Factor } 9 x^2-27 x: \quad 9 x(x-3) \\& 9 x(x-3)=0\end{aligned}$$[/tex]
If a b=0, then either a=0 or b=0, according to the Zero Factor Principle. x=0 or x-3=0
Solve x-3=0: x=3
The following are the quadratic equation's solutions
x=0, x=3
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NEED HELP IMMEDIATELY PLEASE!!! Question 6 of 25
f(x) = 5x + 3. Find the inverse of f(x).
O A. f¹(x)=3-5x
OB. f-¹(x) = x-5/3
OC. f¹(x) = 5x - 3
OD. f-¹(x) = x-3/5
It is option D (f-¹(x) = x-3/5)
Samuel has 1 cup of rubbing alcohol and will use the entire amount. He plans to store the cleaning solution in containers that each hold a maximum of 6 cups. How many containers does he need.
Samuel needs a total of 6 containers for his plan
How to determine the number of container he needs?The complete question is added as an attachment
From the question, we have the following parameters that can be used in our computation:
1 cup of rubbing alcohol = 1/(1/2) = 2 shares
Also, we have
1 cup of rubbing alcohol contains = 1 + 1/2 + 16 = 17.5
For the 2 shares calculated above, we have
2 shares = 17.5 * 2
Evaluate
2 shares = 35
Given that each can hold a maximum of 6 cups, the number of containers needed is
Container = 35/6
This gives
Container = 5.83
Round up
Container = 6
Hence, he needs 6 containers
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How many solutions does the following pair of linear equations have 3x 5y 20 6x 10y 40?.
The pair of linear equations 3x + 5y = 20 and 6x + 10y = 40 have infinitely many solutions.
The given pair of linear equations can be represented in the form of Ax + By = C and Dx + Ey = F, where A = 3, B = 5, C = 20, D = 6, E = 10, and F = 40.
To find the number of solutions for the given pair of linear equations, we can use the following method:
Form the determinant of the coefficients of the variables (x and y) by taking the product of A and E and subtracting the product of B and D.Calculate the value of the determinant, in this case (3 * 10) - (5 * 6) = 30 - 30 = 0. If the determinant is zero, the system has either no solution or infinitely many solutions. In this case, the system of equations has infinitely many solutions, since the determinant is zero.So, the pair of linear equations 3x + 5y = 20 and 6x + 10y = 40 have infinitely many solutions.
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A patio has an area of 214
2
1
4
square yards. 34
3
4
of the patio is carpeted. What is the area of the carpeted part of the patio?
The area of the carpeted part of the patio is 1 [tex]\frac{11}{16}[/tex] square yards.
What are Mixed Fractions?Mixed fractions are type of fractions which consist of a whole number part and a fractional part.
Mixed fractions are of the form a b/c where a is the whole number part and b/c is the fractional part.
Given that,
Area of the patio = 2 1/4 square yards
= (2 × 4 + 1) / 4 square yards
= 9/4 square yards
Also given that, 3/4 of the patio is carpeted.
Area of the carpeted part of the patio = 3/4 (9/4)
= 27/16 square yards
= 1 11/16 square yards
Hence the area of the carpeted part is 1 [tex]\frac{11}{16}[/tex] square yards.
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The complete question is as follows :
A patio has an area of 2 1/4 square yards. 3/4 of the patio is carpeted. What is the area of the carpeted part of the patio?
The price of gas today is 200% of the price last year.
Does that mean the price has doubled?
Answer: Yes, it does.
Step-by-step explanation: Let x represent the price of gas today. 200% of x=200/100*x, which can be written as 2x because 200/100=2. 2x is x doubled, and therefore, it does mean the price has doubled.
Answer:
yes, the price has doubled
please help asap!!!!!!!!!!!!!!!!!!!!!!!!!!!! piecewise function
Answer:
Undefined
Step-by-step explanation:
The function is defined in the domain (1, +∞)
Any value in the range of (-∞, 1] is undefined
Quadrilateral DEFG is similar to quadrilateral HIJK. Find the measure of side IJ.
Figures are not drawn to scale.
D
E
6
F
H
23.6
I
J
Answer:
23.6 units.
Step-by-step explanation:
Since quadrilateral DEFG is similar to quadrilateral HIJK, the ratios of corresponding sides are equal. We can use this information to find the measure of IJ.
We know that:
DF/HJ = EF/IJ = 6/23.6 = 2/8 = 1/4
So we can set up the proportion:
IJ/EF = HJ/DF
IJ/6 = 23.6/6
IJ = 23.6/6 * 6 = 23.6
Factor the algebraic expression 15a+12=
Answer:
3(5a + 4)
Step-by-step explanation:
Given expression: 15a + 12
The common factor for both is 3.
Factorize:
=> 3(5a) + 3(4)
Take out the common factor: (3)
=> 3(5a + 4)
Answer:
3(5a+4)
Step-by-step explanation:
Firstly, find the highest common factor between 15a and 12, which is 3 and write it in brackets, which is:
3(5a+4)
The brackets are 5a+4 because 3×5a=15a and 3×4=12, which gives you the algebraic expression 15a+12
HELP PLEASE!
At the beginning of a storm, a pond was 8 cm deep. During the storm, the depth increased by 1.5 cm every hour for 8 hours.
Click "Show your work" to graph the function in the whiteboard.
There are 4 boxe of apple there are 10 apple in each box how many apple are there in all
By using the multiplication formula, the number of apples in all 4 boxes are 40.
Aside from addition, subtraction, and division, multiplication is also considered to be one of the four fundamental mathematical operations. Multiplying in mathematics refers to the process of repeatedly adding together groups of the same size.
The multiplication formula is expressed as:
Multiplicand × Multiplier = Product
Where:
Multiplicand: The first number (factor)
Multiplier: The second number (factor)
Product: The final result after multiplying the multiplicand and multiplier
In this case, we are given that:
Multiplicand = 4 boxes
Multiplier = 10 apples
Thus, the number of apples in 4 boxes are:
Product = 4 x 10
Product = 40
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Swimming Pool On a certain hot summer's day, 602 people used the public swimming pool. The daily prices are $1.50 for children and $2.50 for adults. The receipts for admission totaled $1228.00
How many children and how many adults swam at the public pool that day?
There were
children at the public pool.
1.59C + 2.25A = 786.75
C + A = 33 (even if all were the higher paying adults, that would only be 33x2.25=74.25 far less than <<786.75)
1.59C + 1.59A = 33(1.59) = 52.47 subtract to eliminate C
(2.25-1.59)A = 786.75 -52.47 = 734.28
.66A = 734.28
A = 73428/66 = 1112.55 = about 1113 adults
C = 33-1113 = -1080 children
which makes no sense. over a thousand "negative" children? the public pool gave refunds to over a thousand prepaid children who didn't show up? but a public swimming pool, no matter how large, probably wouldn't accomodate 1113 adults.
What are the coordinates of the vertex of the graph of the function y 3x² 12x 3?.
The coordinates of the vertex of the function y = -3x² -12x + 3 is (-2,15) and the graph of the function is attached below.
Vertex in math is known as a point on a polygon where the sides or edges of the object meet or where two rays or line segments meet.
Here we have given that the function y = -3x² - 12x + 3 and we have to find the coordinates of the vertex.
As we all know that for any equation of the type y = ax² + bx + c the vertex is given by (h, k)
And the value of the vertex is calculated by using the formula h = -b/2a and k = (4ac - b2)/4a.
From the given question we have identified the value of a = -3, b = -12 and c = 3
Then the value of h is calculated as,
=> h = -(-12)/2(-3)
When we simplify this one then we get the value of h as -2
Similarly the value of k is calculated as,
=> 4ac = 4(-3)(3) = -36
Then the equation is written as,
=> k = [-36 - (-12)2]/4(-3)
When we simplify this one then we get
=> k = -180/-12
Therefore, the value of k is 15
Hence the coordinates of the vertex is (h, k) = (-2, 15).
Complete Question:
What are the coordinates of the vertex of the graph of the function y = -3x² -12x + 3?
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When you solve an equation for one variable and then substitute the resulting expression in for that variable in the other equation This is known as the?.
When you solve an equation for one variable and then substitute the resulting expression in for that variable in the other equation its is known as Substitution method.
I will demonstrate how the substitution method works. Suppose we have the following systems of linear equations with two variables:
Equation 1: 3x + 2y = 11
Equation 2: -x + y = 3
By solving these two equations we get x=1 and y=4.
Equation 2: -x + y = 3
-x + x + y = x + 3
y = x + 3
Next, substitute the value of y in Equation 2 (from the previous step), and substitute its value into Equation 1 to solve for x:
Equation 1: 3x + 2y = 11
Substitute y = x + 3 into Equation 1:
3x + 2(x + 3) = 11
3x + 2x + 6 = 11
Combine like terms:
5x + 6 = 11
5x + 6 - 6 = 11 - 6
5x = 5
Divide both sides by 5 to solve for x:
[tex]\frac{5x}{5} = \frac{5}{5}[/tex]
x = 1
Substitute the value of x into Equation 2 to solve for y:
Equation 2: -x + y = 3
-1 + y = 3
y = 3 + 1
y = 4
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Sliding Ladder A 13-ft ladder i leaning againt a houe
(ee figure) when it bae tart to lide away. By the time the
bae i 12 ft from the houe, the bae i moving at the rate of
5 ft/ec
The angle between the ladder and the ground is decreasing at the rate of 1 ft/sec.
According to the question,
A sliding ladder of length let L=13ft.
Let the ladder touches the house at height h and touches the ground
x ft from the house. This is shown in the figure.
In ΔABC,
θ = [tex]cos^{-1} \frac{AB}{BC}[/tex]
⇒ θ = [tex]cos^{-1} \frac{x}{BC}[/tex]
⇒ dθ/dt= [tex]\frac{d}{dt} cos^{-1} \frac{x}{BC}[/tex]
⇒ dθ/dt= [tex]\frac{-1}{\sqrt{1 - (\frac{x}{13} )^{2} } } \frac{1}{13} \frac{dx}{dt}[/tex]
substituting the value of x=12ft and [tex]\frac{dh}{dt} = 5ft/sec[/tex] , we have
⇒ dθ/dt= [tex]\frac{-1}{\sqrt{1 - (\frac{12}{13} )^{2} } } \frac{1}{13} (5)[/tex]
⇒ dθ/dt= [tex]\frac{-1}{\frac{5}{13} } \frac{1}{13} (5)[/tex]
dθ/dt= -1
so the angle between the ladder and the ground is decreasing at the rate of 1 ft/sec.
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The complete question is:
A 13 ft. ladder is leaning against a wall when its base starts to slide away At the instant when the base is 12 ft. away from the wall, the base is moving away from the wall at the rate of 5 ft/sec. The rate at which the angle θ between the ladder and the ground is changing is -