Buktikan identitas trigonometri berikut: cos^4 alpha (1-tan

Saluranedukasion 2024-02-27T14:56:43

Buktikan identitas trigonometri berikut: cos^4 alpha (1-tan ^4 alpha)=cos ^2 alpha-sin ^2 alpha
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Buktikan identitas trigonometri berikut: cos^4 alpha (1-tan ^4 alpha)=cos ^2 alpha-sin ^2 alpha