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  1.   PENJUMLAHAN SUDUT No Rumus 1 \(\sin (A + B) = \sin A \cos B + \cos A \sin B \) \(\sin (A - B) = \sin A \cos B - \cos A \sin B \) 2 \(\cos (A + B) = \cos A \cos B - \sin A \sin B \) \(\cos (A - […]