Matematika

Pertanyaan

cos(π/3 + 3 x) = cos ( - π/5)

1 Jawaban

  • cos (π/3 + 3x) = cos (-π/5)
    cos (π/3 + 3x) = cos (π/5)
    cos (180/3 + 3x) = cos (180/5)
    cos (60+3x) = cos (36)
    60 + 3x = 36
    3x = 36 - 60
    x = -24/3 = -8°

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