Act Math Practice

Trigonometry Answer 1

Trigonometry Answer 1:

1. Consider the laws of sines and cosines.

sin² = ?

A. 1 - cos²

B. cos² - 1

C. tan²

D. 1 - tan²

E. tan² - 1

The correct answer is C.

Remember the following formulas:

sin² + cos² = 1

cos² = 1 - sin²

sin² = 1 - cos²

Therefore, sin² is always equal to 1 - cos².

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