Jika sin alpha +sin beta = akar(2A) dan cos alpha +cos beta

Saluran Edukasion 2024-05-13T05:56:43

Jika sin alpha +sin beta = akar(2A) dan cos alpha +cos beta = akar(2B), maka cos alpha cos beta +sin alpha sin beta = ...
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Jika sin alpha +sin beta = akar(2A) dan cos alpha +cos beta = akar(2B), maka cos alpha cos beta +sin alpha sin beta = ...