Buktikan identitas berikut. sin(pi/4 + theta) . sin(pi/4 -

Saluran Edukasion 2024-01-11T22:29:08

Buktikan identitas berikut. sin(pi/4 + theta) . sin(pi/4 - theta) = 1/2 cos 2theta
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Buktikan identitas berikut. sin(pi/4 + theta) . sin(pi/4 - theta) = 1/2 cos 2theta