Answers Precalculus Trigonometric Sum Identities — Unit testQuestion 11

11

QuizMultiple Choice

Trigonometric Sum Identities — Unit test

Question 11 • Precalculus

Suppose and cos(x) < 0. What the value of cos(2x)?

Question illustration

Answer

A

Negative StartFraction 16 Over 25 EndFraction

Option A

B

Negative StartFraction 7 Over 25 EndFraction

Option B

C

StartFraction 7 Over 25 EndFraction

Option C

D

StartFraction 16 Over 25 EndFraction

Option D

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Suppose and cos(x) < 0. What the value of…