In the given figure ABC is a triangle in which angle BAC is equal to 30 degree show that BC = the radius of the circumcircle of triangle ABC whose Centre is O. ​

In The Given Figure ABC Is A Triangle In Which Angle BAC Is Equal To 30 Degree Show That BC = The Radius

Answers

Answer 1
See the figure attached..

Step-by-step explanation:

First, Join OB and OC.

∠BOC = 2∠BAC

(∵ angle subtended by an arc at the centre = double the angle subtended by it at any point on the remaining part of the circle)

=> ∠BOC = 2 x 30°...(∵ ∠BAC = 30°, Given)

=> ∠BOC = 60°

In, ΔOBC, OB = OC...(radii of same circle)

∴ ∠OCB = ∠OBC...(∠s opp. equal sides of a triangle are equal)

As the sum of angles of a traingle is 180°,

∠OBC + ∠OCB + ∠BOC = 180°

∠OBC + ∠OBC + 60° = 180°...(∵∠BOC = 60°,proved above)

2∠OBC = 120° => ∠OBC = 60°

Thus, we have ΔABC such that,

∠BOC = ∠OBC = ∠OCB = 60°

ΔOBC is an equilateral triangle

BC = OB i.e. BC is equal to the radius of circle.

Hence proved...

Hope it helps you!!
In The Given Figure ABC Is A Triangle In Which Angle BAC Is Equal To 30 Degree Show That BC = The Radius

Related Questions

10 divided by 3.95 times 67=3?

Answers

Answer: (Decimal: x = 0.99746…)

Step-by-step explanation:  

An art teacher put 108 markers on the 8 tables in her room she gave out the greatest number of markers possible so that each table had the same number of markers how many markers were left over?

Answers

Answer:

4 markers left

Answer:

4 markers

Step-by-step explanation:

108/8=13.5

13x8=104

108-104=4

Find the solution of 3x+5/2x+1 = 1/3

Answers

Answer:

x = -2

Step-by-step explanation:

[tex]\frac{3x+5}{2x+1} = \frac{1}{3}[/tex]

On cross multiplying,

3(3x + 5) = 1(2x + 1)9x + 15 = 2x + 17x = -14x = -2

Answer:

[tex]x=-2[/tex]

Step-by-step explanation:

Given equation:

[tex]\dfrac{3x+5}{2x+1}=\dfrac13[/tex]

Cross multiply:

[tex]\implies 3(3x+5)=1(2x+1)[/tex]

Expand brackets:

[tex]\implies 9x+15=2x+1[/tex]

Subtract [tex]2x[/tex] from both sides:

[tex]\implies 9x+15-2x=2x+1-2x[/tex]

[tex]\implies 7x+15=1[/tex]

Subtract 15 from both sides:

[tex]\implies 7x+15-15=1-15[/tex]

[tex]\implies 7x=-14[/tex]

Divide both sides by 7:

[tex]\implies \dfrac{7x}{7}=-\dfrac{14}{7}[/tex]

[tex]\implies x=-2[/tex]

Find the volume of the pyramid.

A) 22 cm3
B) 264 cm3
C) 132 cm3
D) 44 cm3

Answers

264 cm3.
Length * width * height gives the volume of a shape.

Consider parallelogram VWXY below.

Use the information given in the figure to find m∠YXV, m∠Y, and x.

Answers

note:Parallelogram WXYZ not VWXY & I will answer the questions in the image b'cos I don't get your question.

Answers:

a.(i.)Slope of line YZ = 4/5

(ii.)Line adjacent line YZ is line YX,slope of YX =5/4

b.(i.)Length of line YZ =√41 units

 (ii.)Length of line YX =√41 units

c.WXYZ is a rhombus.

Step-by-step explanation:

a.Slope=gradient(m)=(y₂-y₁)/(x₂-x₁)

(i.)m of line YZ=(y₂-y₁)/(x₂-x₁) where Y(-6,-1) & Z(-1,3)

(I believe you know what the y₂,y₁,x₂ & x₁ stand for.)

So m=(y₂-y₁)/(x₂-x₁),=(3-(-1))/(-1-(-6) =(4)/(5)=4/5

∴m of line YZ is 4/5

(ii.)m of line YX=(y₂-y₁)/(x₂-x₁) where Y(-6,-1) & X(-2,4)

So m=(y₂-y₁)/(x₂-x₁),=(4-(-1))/(-2-(-6) =(5)/(4)=5/4=1.25

∴m of line YX is 5/4

b.(i.)To find the length of line YZ,we have to express it as column vector YZ.

Vector YZ=OZ-OY,Z-Y=(-1,3)-(-6,-1)=(5,4)

Length=√x² plus y²=√5² plus 4²=√25 plus 16=√41 units

∴The length of line YZ is √41 units.

(ii.)To find the length of line YX,we have to express it as column vector YZ.

Vector YX=OX-OY,X-Y=(-2,4)-(-6,-1)=(4,5)

Length=√x² plus y²=√4² plus 5²=√16 plus 25=√41 units

∴The length of line YX is √41 units.

c.WXYZ is a rhombus.

1. The equation of a circle is x² + y² - 4x +2y-11-0. What are the center and the radius of the circle?
www
Show your work.
Answer:

Answers

[tex]\mathfrak{\huge{\orange{\underline{\underline{AnSwEr:-}}}}}[/tex]

Actually Welcome to the concept of Circles,

so we get as,

centre as ==> ( -g, -f) ==> (2,-1)

Find the volume of the triangular prism.
4 ft
8 ft
37 ht

Answers

Answer:

4 ft

Step-by-step explanation:

So to calculate the volume of a triangular prism, the formula is 4ft

Step-by-step explanation:

volume of prism = area of triangle * length

                            = 1/2*4*8*37

                            = 592ft^3

A sculpture is made of two sizes of rectangular prisms. one size measures 13 in by 8 in by 2 in. the other size measures 9 in by 8 in by 18 in. what is the total volume of the sculpture

Answers

Answer:The answer should be 1504 if i did it corectly

Step-by-step explanation: to get volume you need to multiply L*W*H and filling that in. 13 * 8 * 2 whitch you should get 208

the other size would have to be 9 * 8 * 18 which you should get 1296

then to get the total you just need to add together the two sums 208+1296 which should equal 1504.

find 6 rational numbers between 3 and 4.​

Answers

Answer:

[tex] \frac{3 \times 10}{1 \times 10} [/tex]

And

[tex] \frac{4 \times 10}{1 \times 10} [/tex]

[tex] = \frac{30}{10} \: and \: \frac{40}{10} [/tex]

[tex] \frac{31}{10} \frac{32}{10} \frac{33}{10} \frac{34}{10} \frac{35}{10} \: and \: \frac{36}{10} [/tex]

Step-by-step explanation:

these are the six rational numbers between 3 and 4

Answer:

[tex]\dfrac{37}{12}, \dfrac{19}{6}, \dfrac{13}{4}, \dfrac{10}{3}, \dfrac{41}{12}, \dfrac{7}{2}[/tex]

Step-by-step explanation:

Write 3 and 4 as rational numbers with a common denominator.

Common denominator = common multiple = 12

[tex]\implies 3=\dfrac{3 \times 12}{12}=\dfrac{36}{12}[/tex]

[tex]\implies 4=\dfrac{4 \times 12}{12}=\dfrac{48}{12}[/tex]

Therefore, the rational numbers between them with a denominator of 12 are:

[tex]\dfrac{37}{12}, \dfrac{38}{12}, \dfrac{39}{12}, \dfrac{40}{12}, \dfrac{41}{12}, \dfrac{42}{12}, \dfrac{43}{12}, \dfrac{44}{12}, \dfrac{45}{12}, \dfrac{46}{12}, \dfrac{47}{12}[/tex]

Reduced to their simplest form:

[tex]\dfrac{37}{12}, \dfrac{19}{6}, \dfrac{13}{4}, \dfrac{10}{3}, \dfrac{41}{12}, \dfrac{7}{2}, \dfrac{43}{12}, \dfrac{11}{3}\dfrac{15}{4}, \dfrac{23}{6}, \dfrac{47}{12}[/tex]

**There are many, many more rational numbers between 3 and 4 that we could find by changing the denominator**

What is 7.23 x 10^5 in standard notation

Answers

Answer:  723,000

Delete the comma if needed

================================================

Explanation:

The exponent of 5 means we move the decimal 5 spots to the right.

This has us go from 7.23 to 723,000

If the exponent was negative, then we'd move that amount to the left.

What is the measure of arc JK?

Answers

Answer:

AS 37=1/2 (45+x)

74=45+x

74-45=x

29=x

or

x=29

ANSWER

ANS= B.29

Kayli made 3 times as many Peanut Butter
Cookies as Sugar Cookies. This can be modeled
using the equation below.

Answers

Answer:

p/3

Step-by-step explanation:

You can divide both sides by three.

P=3S

----/3

P/3=S

Thus, p/3 is the answer

The volume of a solid is 500 cm3. What is the radius of a cylinder if the height is 13.

Answers

Answer:

3.499 cm

Step-by-step explanation:

volume of a cylinder = pi r^2 h

                             500 = pi r^2 (13)

                           sqrt ( 500/(pi * 13) = h =

If you take the trinomial (4x2 + 8x + 4) and divide it by (2x + 2), what will you get?

Answers

I believe the answer is 8x+2

Question
Find the lateral surface area of the cylinder. Round your answer to the nearest tenth.

Answers

Answer:

88 m²

Step-by-step explanation:

Formula

Lateral Surface Area (LSA) = 2πrh

Given :

Diameter = 14 m ⇒ Radius = 7 mHeight = 2 m

Solving :

LSA = 2πrhLSA = 2 x 22/7 x 7 x 2LSA = 22 x 4LSA = 88 m²

Can anyone help with this? I'm having some trouble.​

Answers

14x+7x+21x+28x = 360
70x = 360
X = 5.14

The top and bottom lines are parallel. what is the value of X?

Answers

Answer:

B, the answer is B or C believe me

Step-by-step explanation:

Answer is B

Explanation:
(alternate interior angle)
75+45+x=180
120+x=180
x=60

What is Three-fourths divided by one-sixth?

Answers

Answer:

[tex] \frac{9}{2} [/tex]

Step-by-step explanation:

[tex] \frac{3}{4} \div \frac{1}{6} [/tex]

[tex] \frac{3}{4} \times \frac{6}{1} [/tex]

[tex] \frac{18}{4} [/tex]

[tex] \frac{9}{2} [/tex]

hello!

Divide fractions:-

[tex]\displaystyle\frac{3}{4} :\frac{1}{6}[/tex]

Multiply the 1st fraction times the reciprocal of the 2nd fraction (flop the second fraction over) :-

[tex]\displaystyle\frac{3}{4} *\frac{6}{1} =\frac{3*6}{4*1}=\frac{18}{4}[/tex]

[If necessary, divide the top & bottom by 2, and you'll have 9/2]

note:-

Hope everything is clear; if you need any explanation/clarification, kindly let me know, and I will comment and/or edit my answer :)

okay, triangular prism volume formula. b is base, B is area of base (i think) V is volume, h is height, but I forgot what H is.
Also, how has your day been? :)

Answers

Answer:

good and how do you forget wut H is?

Step-by-step explanation:

3/5 plus 1/2 in simplest form

Answers

3/5 + 1/2

= 6/10 + 5/10

= 11/10

= 1(1/10)

= 1.10

60 ft
60 ft
30t)
60 ft
60ft
30 ft.

Answers

Answer:

7290ft^2

Step-by-step explanation:

60*30=1800

then multiply that by 4 because of the 4 rectangle

1800*4=7200

multiply 30*30 to get 90 then add that on

7290

1/17의 십진법 확장에서 반복되는 자릿수 블록의 최대 자릿수는 얼마입니까? 나눗셈을 하여 답을 확인하세요.

what can the maximum number of digits be in the repeating block of digits in the decimal expansion of 1/17? perform the division to check your answer.

Answers

Hope this helps :))))))))))

Helppppppp pls :))))))))

Answers

Answer:

g(x) = 1 * (x + 1)^2

Step-by-step explanation:

Answer:

g(x) = 1 * (x + 1)^2

Step-by-step explanation:

Two students each write a function, S(n), that they think can be used to find the number of squares needed to make the nth figure in the pattern shown.

Use the drop-down menus to explain why each function does or does not represent the number of squares needed to make the nth figure in the pattern.

Answers

The number of squares needed to make nth figure in the pattern is

S(n) = 2ⁿ.

What is square?

A square is "a shape that has four sides of the same length and the four angles of right angles".

According to the question,

S(1)=2; S(2) =4; S(3) = 8: S(4)=16 .........

S(1) = 2; S(2) = 2² = 4; S(3) = 2³ = 8; S(4) = 2⁴ = 16....... S(n) = 2ⁿ

In to find the number of squares needed to make the nth figure in the given pattern is S ( n ) = 2ⁿ.

Hence, the number of squares needed to make nth figure in the pattern is S(n) = 2ⁿ.

Learn more about squares here

https://brainly.com/question/8954712

#SPJ2

The number of squares needed to make nth figure in the pattern is

S(n) = 2ⁿ.

According to the question,

S(1)=2; S(2) =4; S(3) = 8: S(4)=16 .........

S(1) = 2; S(2) = 2² = 4; S(3) = 2³ = 8; S(4) = 2⁴ = 16....... S(n) = 2ⁿ

In to find the number of squares needed to make the nth figure in the given pattern is S ( n ) = 2ⁿ.

Hence, the number of squares needed to make nth figure in the pattern is S(n) = 2ⁿ.

There are 70 days in ten weeks.

Based on the mean from the sample, how many more guests will stay at the small hotel than at the bed and breakfast in a 10-week period?

Answers

Using proportions, it is found that 315 more guests will stay at the small hotel than at the bed and breakfast in a 10-week period.

What is a proportion?

A proportion is a fraction of a total amount.

At the small hotel, a mean of 7.75 guest stay per night. 10 weeks have 70 days, then the total amount is:

S = 7.75 x 70 = 542.5

At the bed and breakfast, the mean was of 3.25 guests per night, hence:

B = 3.25 x 70 = 227.5.

The difference is given by:

S - B = 542.5 - 227.5 = 315.

Hence, 315 more guests will stay at the small hotel than at the bed and breakfast in a 10-week period.

More can be learned about proportions at https://brainly.com/question/24372153

Answer: Look at the attachment

Step-by-step explanation:

1.(07.01 LC)
What is the value of x in the equation -6 + x = -4? (1 point)
-10
-2
10

Answers

hello!

In order to find the value of x, we should add 6 to both sides:-

-6+x=-4

x=-4+6

x=2

Hence, the value of x is 2.

note:-

Hope everything is clear; if you need any explanation/clarification, kindly let me know, and I'll comment and/or edit my answer :)

50% is the same as what decimal?

Answers

Answer:

0.5

Step-by-step explanation:

To convert a percentage into a decimal you divide by 100 :

50% ÷ 100 = 0.5

Hope this helped and brainliest please

Answer: 0.5

Step-by-step explanation: 50/100

Help please if you can do it

Answers

Answer:

Associative property

Step-by-step explanation:

Sine the () was moved to another two numbers, it would be the Associative property of addition

Hope this helps :)

Find the area of the parallelogram. 13 cm 20 cm Area cm? ​

Answers

Answer:

260 cm²

Step-by-step explanation:

A=b×h

A=b×h=20·13=260

Step-by-step explanation:

solution

b=20 cm

h =13 cm

Area (a) = b ×h

a=20cm ×13 cm

so , a =260 cm square

the question is in the image

Answers

Check the picture below.

now, keeping in mind that ratio of the sides is the same as the ratio of the perimeters.

[tex]\cfrac{\stackrel{small}{trapezoid}}{\stackrel{large}{trapezoid}}\qquad \stackrel{sides}{\cfrac{6}{9}}~~ = ~~\stackrel{perimeters}{\cfrac{20}{p}}\implies \cfrac{2}{3}=\cfrac{20}{p}\implies 2p=60 \\\\\\ p=\cfrac{60}{2}\implies p=30 \\\\[-0.35em] ~\dotfill[/tex]

[tex]\cfrac{\stackrel{small}{trapezoid}}{\stackrel{large}{trapezoid}}\qquad \stackrel{sides^2}{\cfrac{6^2}{9^2}}~~ = ~~\stackrel{areas}{\cfrac{A}{45}}\implies \cfrac{36}{81}=\cfrac{A}{45}\implies \cfrac{4}{9}=\cfrac{A}{45} \\\\\\ 180=9A\implies \cfrac{180}{9}=A\implies 20=A[/tex]

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