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Mathematics 9 Online
OpenStudy (anonymous):

Determine an equivalent expression for sin3xcosx + cos3xsinx . A. 4 sinx B. 2 sinxcosx C. 4 sinxcosx D. 2 sin2xcos2x

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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