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OpenStudy (anonymous):
Determine an equivalent expression for sin3xcosx + cos3xsinx . A. 4 sinx B. 2 sinxcosx C. 4 sinxcosx D. 2 sin2xcos2x
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OpenStudy (anonymous):
the answer is D but i dont know how thats so ... T.T
OpenStudy (anonymous):
thought we just did this?
OpenStudy (anonymous):
you havent explained how to do it tho
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