. Use trigonometric expressions to build an equivalent trigonometric identity with the given expression: cos (x) − cos3 (x) = ? A)cos (x) sin (x)
B)cos (x) sin2 (x)
C)sin2 (x)
D)sin (x) cos2 (x)

B

Step-by-step explanation:

We want to determine an equivalent trignometric identity with the given expression:

We can factor out a cos(x):

Recall from the Pythagorean Identity that:

Therefore:

Substitute:

Our answer is B.

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step-by-step explanation:

1. minimum

2. 6400

3. eight

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