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OpenStudy (anonymous):
Pre Calc: Identify the Identity Sin3x-sinx/cos3x-cosx =-cot2x Help Please, Im studying Sum and Difference, Half Angle, Double angle, Sum to product and Product to sum Formulas.
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OpenStudy (anonymous):
start from the right side
OpenStudy (anonymous):
What formulas would you use? I get stuck after using the Sum to Product
OpenStudy (anonymous):
double angle
OpenStudy (dumbcow):
what do you get after applying sum to product ...it should be fairly easy after that
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