Sin A . Cos A (tan A + cotan A)
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Pertanyaan
Sin A . Cos A (tan A + cotan A)
1 Jawaban
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1. Jawaban daffaci
Sin A . Cos A (tan A + cotan A)
= Sin A . Cos A . Tan A + Sin A . Cos A . Cot A
= Sin A . Cos A . Sin A/Cos A + Sin A . Cos A . Cos A/Sin A
= Sin2 A + Cos2 A = 1