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OpenStudy (anonymous):
verify identities: 1-cos(2u)/2 = sin^2u
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OpenStudy (raden):
hint : cos2u = 1-2sin^2 u
OpenStudy (anonymous):
@RadEn what else?
OpenStudy (raden):
do from left side, u can plug cos2u = 1-2sin^2 u, to prove equal right side
OpenStudy (anonymous):
i just dont know what that looks like all put together @RadEn
OpenStudy (raden):
well, i hope u can understand it... |dw:1353378444633:dw|
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