Mathematics, 03.03.2021 15:10 natalieagustinlop54

Prove that 1/2 (cos :2 theta-cos 8theta)=sin 5theta. sin 3theta

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Prove that 1/2 (cos :2 theta-cos 8theta)=sin 5theta. sin 3theta...

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Prove that 1/2 (cos :2 theta-cos 8theta)=sin 5theta. sin 3theta​

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Prove that 1/2 (cos :2 theta-cos 8theta)=sin 5theta. sin 3theta