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Mathematics 14 Online
OpenStudy (crashonce):

sin4A+sin4B+sin4C=-4sin2Asin2Bsin2C

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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