1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Firlakuza [10]
2 years ago
9

Rectangle GHIJ inscribed in a circle, GK⊥JH, GK = 6cm, m∠GHJ = 15°. Find the radius of the circle. pls help !!

Mathematics
2 answers:
Vika [28.1K]2 years ago
7 0

Answer:

Radius of circle is given as 22.39 cm

Step-by-step explanation:

Given data:

GHIJ is rectangle which is inscribe in a circle such that prependicular lie on one side of traingle form by joining the diagnol of rectangle is 6 cm

and angle is given as 15 degree as shown in figure given below

we know that

tan\theta = \frac{prependicular}{ base}

so we have

tan\theta = \frac{6}{x}

tan15 = \frac{6}{x}

tan 15  = 0.267 {from calculator}

so we have

x = 22.39 cm

hence the radius of circle is given as 22.39 cm

Mariulka [41]2 years ago
5 0

Answer:

6(2 + √3)  

Step-by-step explanation:

Given : Rectangle GHIJ inscribed in a circle. <em>GK⊥JH</em>, <em>GK</em> =  6 cm and <em>m∠GHJ</em>=15°.

To find: Radius<em>(KH)</em> =?

Sol:  As given in figure 1, Since <em>GK⊥JH ∴ m∠GKH = 90° . Let GK = x cm.</em>

Now, In ΔGKH,

tan\Theta =\frac{perpendicular}{base}

tan\Theta =\frac{GK}{KH}

tan 15^{\circ} =\frac{6}{x}  

2-\sqrt{3} =\frac{6}{x}         (∵<em> tan 15°</em> = 2 - √3)

x = \frac{6}{2-\sqrt{3} }

On rationalizing the above expression,

x = \frac{6}{2-\sqrt{3} } \times \frac{2+\sqrt{3} }{2+\sqrt{3} } =\frac{6(2+\sqrt{3} )}{4-3}

Therefore, radius of the circle <em>(KH)</em> = 6 (2+√3)

This is how to find the value of <em>tan 15°</em>

<em>tan</em> 15° = <em>tan </em>(45° -30°)

Now using,

tan(A-B) = \frac{tanA-tanB}{1+tanA tanB}

tan(45^{\circ} - 30^{\circ}) = \frac{tan 45^{\circ}-tan30^{\circ}}{1+tan 45 tan30}

tan(45^{\circ} - 30^{\circ}) = \frac{1-\frac{1}{\sqrt{3}}}{1+1\times \frac{1}{\sqrt{3}}}=\frac{\sqrt{3}-1}{\sqrt{3}+1}

On rationalizing,

tan 15^{\circ} = \frac{\left (\sqrt{3}-1 \right )^{2}}{3-1} =\frac{4-2\sqrt{3}}{2}

Taking 2 common from numerator,

<em>tan</em> 15° = 2 - √3

You might be interested in
If a hand sanitizer cleans 99.9% of bacteria if u use it 2 times does that make it 100%
Viktor [21]

Answer:

It's true

Step-by-step explanation:

I hope it helps you

7 0
2 years ago
Last year Victoria paid £354 for her car insurance
Fed [463]

Answer:

the price decreased by 7.06 percent

Step-by-step explanation:

100/354x329=92.93785311

100-92.93785311=7.06

3 0
2 years ago
6)<br> R<br> E 126<br> 10x + 8<br> 13 + 5x<br> D<br> A) 1<br> C) 5<br> B) 7<br> D) 14
Gemiola [76]

Step-by-step explanation:

step 1. what is the question? maybe the question is what is the value of x in the diagram. okay.

step 2. interior angles of a triangle add up to 180°

step 3. the 3 angles inside the triangle are 10x + 8, 13 + 5x, and (180 - 126)

step 4. (10x + 8) + (13 + 5x) + 54 = 180

step 5. 15x + 21 = 126

step 6. 15x = 105

step 7. x = 7.

3 0
2 years ago
In need of help asaappppp
Inessa [10]

Answer:

8 and 6 is the answer.......

4 0
3 years ago
Read 2 more answers
Solve for x.<br> x^2 + 6 = 10
Ostrovityanka [42]

Steps To Solve:

x² + 6 = 10

~Subtract 6 to both sides

x² + 6 - 6 = 10 - 6

~Simplify

x² = 4

~Take square root of 4

x² = ±√4

~Simplify

x = -2 or x = 2

Best of Luck!

5 0
3 years ago
Other questions:
  • What is 4 1/3 times 18
    8·2 answers
  • Who can help me with number 12
    6·1 answer
  • Points ​(2,−​1), ​(−​2,7), ​(1,−​2), ​(0,−​1), and​ (4,7) lie on the graph of a quadratic function. a. What is the axis of symme
    12·1 answer
  • Guys help please!!!!!
    12·1 answer
  • Vector has 4 orange picks for every 3 green picks. If 8 out of the picks are orange, how many picks are green
    13·1 answer
  • Noah wanted to check his solution of x= 14/15 for the equation (7x - 6) = 6x – 10.
    11·2 answers
  • If the perimeter of the square below is 12 units. What is the value of x?<br><br><br> Pls help
    5·1 answer
  • K + a/6 = 3k help b4 i cry my eyes out :’/
    9·1 answer
  • I dont know the answers to this question please tell me the x and y
    5·1 answer
  • Enter a number in the box so that the equation will have infinitely many solutions.
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!