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Keith_Richards [23]
3 years ago
15

Find the exact value

Mathematics
1 answer:
Leto [7]3 years ago
3 0

Since cos theta is 15/17, let a right triangle have a hypotenuse of 17 and a leg of 15. This means that the other is 8.

Sin 2 theta is a double angle identity.

Sin 2 theta  = 2 sin theta cos theta = 2(8/17)(15/17) = 240/289

Cos 2theta = cos^2 – sin^2 = (15/17)^2 – (8/17)^2 = 161/289

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How do I solve 3x+17 greater than or equal to (you can’t do the sign on a phone but it would be _>) 5
Kobotan [32]
<h3><u>The value of x is greater than or equal to -4.</u></h3>

(3x + 17) ≥ 5

Subtract 17 from both sides.

3x ≥ -12

Divide both sides by 3.

x  ≥ -4


5 0
3 years ago
Please help!! i don’t understand how to do this
Arisa [49]

Answer: A is the right angle

Step-by-step explanation:

a. 20^2 + 15^2 = 25^2

400 + 225 = 625

625 = 625

hope this helps :)

8 0
3 years ago
The next model of a sports car will cost 4.7% more than the current model. The current model costs $48,000. How much will the pr
Mashcka [7]

Answer:

increase - $2256

price - $50256

Step-by-step explanation:

multiply the percent (in decimal form) by the original cost

48000(0.47)=2256

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7 0
3 years ago
Read 2 more answers
-3x+6y= -3 and -5+y=-23
Ira Lisetskai [31]

-5 +y = -23

add 5 to each side

y = -18

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add108 to each side

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x=-35

y= -18



5 0
3 years ago
Read 2 more answers
The circumference of a circle is 704 cm,find its area
Digiron [165]
The circumferince of the circle is 2πR ;
The area of the circle is πR^{2};
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R = 352 / π ;
πR^{2} = π × ( 352 / π )^2 = ( 352^2) / π = 123904 / π ≈ 39459.87 ≈ 39460 cm^2 ;
5 0
3 years ago
Read 2 more answers
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