Minggu, 06 Agustus 2017

RUMUS PERKALIAN SINUS DAN COSINUS

2 Sin A . Cos B = Sin (A + B) + Sin (A - B)

2 Cos A . Cos B = Sin (A + B) - Sin (A - B)

2 Cos A . Cos B = Cos (A + B) + Cos (A - B)

-2 Sin A . Sin B = Cos (A + B) - Cos (A - B)

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