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Suppose Sine (x) = four-fifths and cos(x) < 0. What is the value of cos(2x)?

Suppose Sine (x) = four-fifths and cos(x) < 0. What is the value of cos(2x)?
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3 votes
Suppose Sine (x) = four-fifths and cos(x) < 0. What is the value of cos(2x)?

User Slybitz
by
8.1k points

2 Answers

5 votes

Answer:

B

Explanation:

edge

User Kidwon
by
8.0k points
5 votes

Answer:

B. -7/25

Explanation:

edge

Suppose Sine (x) = four-fifths and cos(x) < 0. What is the value of cos(2x)?-example-1
User Kasperhj
by
9.0k points
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