Matematika

Pertanyaan

Sin(10°-4x) = cos(3x+30°)

1 Jawaban

  • jawab
    trigonometri

    sin (10 - 4x ) = cos (3x +30)
    cos (90 -(10- 4x)) = cos (3x + 30)
    co (80 + 4x) = cos (3x +30)
    80 + 4x = 3x + 30
    4x -3x = 30 - 80
    x = - 50

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