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OpenStudy (anonymous):
Write the expression as the sine, cosine, or tangent of an angle. sin 5x cos x - cos 5x sin x
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OpenStudy (anonymous):
A. Cos 6x B. Cos 4x C. Sin 6x D. Sin 4x
OpenStudy (anonymous):
@S0fw0N Please help.
OpenStudy (anonymous):
Okay, the answer is D. Sin 4x.
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