Cos A 1+sin A --------- = -------- 1-sin A cos A
Matematika
Rahmaawalia
Pertanyaan
Cos A 1+sin A
--------- = --------
1-sin A cos A
--------- = --------
1-sin A cos A
1 Jawaban
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1. Jawaban Robinn
cosx / 1 - sinx = 1 + sinx / cosx
cosx (1 + sinx) / (1 - sinx)(1 + sinx) = 1 + sinx / cosx
cosx (1 + sinx) / 1 - sin²x = 1 + sinx / cosx
cosx (1 + sinx) / cos²x = 1 + sinx / cosx
1 + sinx / cosx = 1 + sinx / cosx