Which of the following could not be set equal to sin x as an identity? (A) (B) (C) (D)
Chapter 5, Problem 5.1.1.89(choose chapter or problem)
Multiple Choice Which of the following could not be set equal to sin x as an identity?
(A) \(\cos \left(\frac{\pi}{2}-x\right)\)
(B) \(\cos \left(x-\frac{\pi}{2}\right)\)
(C) \(\sqrt{1-\cos ^{2} x}\)
(D) \(\tan x \sec x\)
(E) \(-\sin (-x)\)
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