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OpenStudy (crashonce):
sin4A+sin4B+sin4C=-4sin2Asin2Bsin2C
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OpenStudy (crashonce):
@ganeshie8 @ikram002p @LarsEighner
OpenStudy (dumbcow):
this might be helpful here http://en.wikipedia.org/wiki/Trig_Identity#Product-to-sum_and_sum-to-product_identities
OpenStudy (crashonce):
oh thanks lol forgot to apply them
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