Buktikan identitas trigonometri berikut! √[(1 - cos x) / (1 + cos x)] = sin x / (1 + cos x)
Matematika
Anonyme
Pertanyaan
Buktikan identitas trigonometri berikut!
√[(1 - cos x) / (1 + cos x)] = sin x / (1 + cos x)
√[(1 - cos x) / (1 + cos x)] = sin x / (1 + cos x)
1 Jawaban
-
1. Jawaban EdiHeaven
√ [ (1 - cos x) / (1 + cos x) kali (1 + cos x)/ (1 + cos x) ]
√[ 1 - Cos²x / (1 + Cosx)² ]
√(sin²x ) / ( 1 + Cosx)²]
Sinx / 1 + Cosx
Terbukti