Buktikan kebenaran identitas berikut! a. (sin x+cos

Saluranedukasion 2024-02-11T14:59:08.000Z

Buktikan kebenaran identitas berikut! a. (sin x+cos x)^2=1+sin 2x b. cos^4 x-sin^4 x=cos 2x
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Buktikan kebenaran identitas berikut! a. (sin x+cos x)^2=1+sin 2x b. cos^4 x-sin^4 x=cos 2x