2
QuizMultiple Choice

Sum and Difference Identities

Question 2 • EA Pre-Calculus Credit Recovery

Find cos x if sin x cot x = 0.5

Answer
A
0.5
B
2
C
1
D
no solution

Explanation

Use cot x = cos x / sin x. Since cot x is defined only when sin x is nonzero, sin x · cot x = sin x · (cos x / sin x) = cos x. The equation therefore gives cos x = 0.5, so the best answer is 0.5.

AI-written and checked against the verified answer.

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