Product of Sines and Cosines

Practice Questions

Trigonometry › Product of Sines and Cosines

Questions

8

1

Which of the following completes the identity $cos(\alpha)cos(\beta) =$

2

Use the product of cosines to evaluate $cos(\frac{\pi}{6})cos(\frac{5\pi}{3})$

3

Use the product of sines to evaluate $sin(\frac{3x}{4})sin(\frac{6x}{2})$ where $x = \frac{pi}{3}$

4

Use the product of sines to evaluate .

5

Derive the product of sines from the identities for the sum and differences of trigonometric functions.

6

True or False: All of the product-to-sum identities can be obtained from the sum-to-product identities

7

Use the product of sine and cosine to evaluate $sin(\frac{\pi}{4})cos(\pi)$ .

8

Use the product of cosines to evaluate . Keep your answer in terms of .

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