Buktikan identitas-identitas berikut:a.
Saluran Edukasion 2024-06-30T01:09:08
Buktikan identitas-identitas berikut:a. sin^4a.(cotg^4a-1)=2.cos^2a-1 b. (sin a+cos a)^2-2.tan a.cos^2a=1
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