Diketahui sin A + sin B = 1 dan cos A + cos B =

Saluran Edukasion 2024-05-04T23:46:43

Diketahui sin A + sin B = 1 dan cos A + cos B = (5/3)^(1/2). Nilai cos (A-B) = ....
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Diketahui sin A + sin B = 1 dan cos A + cos B = (5/3)^(1/2). Nilai cos (A-B) = ....