Answers Mathematics III A Trigonometric Double Angle IdentitiesQuestion 7

7

QuizMultiple Choice

Trigonometric Double Angle Identities

Question 7 • Mathematics III A

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

Question illustration

Answer

A

Negative StartFraction 14 Over 25 EndFraction

Option A

B

Negative StartFraction 7 Over 25 EndFraction

Option B

C

StartFraction 7 Over 25 EndFraction

Option C

D

StartFraction 14 Over 25 EndFraction

Option D

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