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If sinθ=3/5 and θ terminates in the first quadrant, find the exact value of cos2θ.

If sinθ=3/5 and θ terminates in the first quadrant, find the exact value of cos2θ.
asked 165k views
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If sinθ=3/5 and θ terminates in the first quadrant, find the exact value of cos2θ.

asked
User Deunz
by
7.7k points

2 Answers

2 votes

Answer:

D

Explanation:

edge 2020

answered
User MrMime
by
8.2k points
6 votes
we first solve the angle from the given sinθ=3/5. Using a calculator in degrees mode, theta is equal to 36.87 degrees. Hence 2 theta is equal to 73.74 degrees. The value of cosine 73.74 degrees is equal to 7/25. This is the final answer. 
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User Lshettyl
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8.1k points
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