Buktikan! Cos A(1-tg A)=cos A -sin A
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Buktikan!
Cos A(1-tg A)=cos A -sin A
Cos A(1-tg A)=cos A -sin A
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1. Jawaban urlovelyqueen
Cos A(1-tg A)=cos A -sin A
cos A - cos A . tan A = cos A - sin A
cos A - cos A . sin A/cos A = cos A - sin A
cos A - sin A = cos A - sin A