cos6x+cos2x/sin6x+sin2x =cot 4x
Matematika
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Pertanyaan
cos6x+cos2x/sin6x+sin2x =cot 4x
1 Jawaban
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1. Jawaban Anonyme
jawab
(cos 6x + cos 2x )/(sin 6x + sin 2x) = cot 4x
(cos 6x + cos 2x) / (sin 6x + sin 2x) =
= (2 cos 4x cos 2x )/( 2 sin 4x cos 2x)
= cos 4x/sin 4x
= cot 4x