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OpenStudy (anonymous):
I have exam tomorrow, Could someone please explain how i should show that this equation is correct ? (sin3v+sinv)/(cos3v+cosv) = tan2v
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OpenStudy (anonymous):
Is that sin 3v or sin^3 v
OpenStudy (anonymous):
It's 3v, Please help me if you know how to do it.
OpenStudy (anonymous):
You have to manipulate the left handside using sin (A-B), cos (A-B)
OpenStudy (anonymous):
Do you know the triple angle identity?
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