Mathematics, 28.07.2019 15:40 Arelysoqui91

Prove the identity: $\frac{1}{4} \sin( 4y) = \sin(y) \cos ^{3} (y) - \cos(y) \sin^{3} (y)$

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Prove the identity: [tex] \frac{1}{4} \sin( 4y) = \sin(y) \cos ^{3} (y) - \cos(y) \sin^{3} (y) [/te...

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