Matematika

Pertanyaan

cos6x+cos2x/sin6x+sin2x =cot 4x

1 Jawaban

  • 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

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