SOLUTION: Rewrite the expression as a sum or difference, then simplify if possible. {{{cos(3theta)sin(theta)}}}

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Question 1003730: Rewrite the expression as a sum or difference, then simplify if possible.
Answer by Edwin McCravy(20060)   (Show Source): You can put this solution on YOUR website!



This is the same as



We know that these identities hold:





We add those term by term, the last terms cancel and we get:









Or, distributing and rearranging:



Edwin
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