Answers Precalculus Trigonometric Half Angle IdentitiesQuestion 7

7

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Trigonometric Half Angle Identities

Question 7 of 10 • Precalculus

Which expression is equivalent to 2cos2?

Question illustration

Answer

A

0

B

1

C

1 – 2cos(x)

D

1 + 2cos(x)

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Which expression is equivalent to 2cos2?