Matematika

Pertanyaan

Toloooongggg jawab dong. Dikumpul besok
Toloooongggg jawab dong. Dikumpul besok

1 Jawaban

  • 1.)
    sin 2x/tan 3x =
    sin 2x/tan 3x . 2x/2x . 3x/3x
    = sin 2x/2x . 3x/tan 3x . 2x/3x
    = 1 . 1 . 2/3
    = 2/3
    2.)
    1 - cos 2x/sin 2x=
    1-(1 - 2sin²x)/sin2x
    2sin²x/sin2x
    2.sin²x/sin2x . x²/x². 2x/2x
    = 2 . sin²x/x² . 2x/sin2x . x²/2x
    = 2 . 1 . 1 . x²/2x
    = 2x²/2x
    = x
    = 0
    3.)
    2 tan 3x/cos 4/5x
    = 2 . tan 3x/cos 4/5x . 3x/3x . 4/5x/4/5x
    = 2 . tan 3x/3x . 4/5x/cos 4/5x . 3x/4/5x
    = 2 . 1 . 1 . 15/4
    = 30/4
    = 7,5
    4.)
    3 sin x/cos 4/5x
    = 3 . sin x/cos 4/5x . x/x . 4/5x/4/5x
    = 3 . sin x/x . 4/5x/cos 4/5x . x/4/5x
    = 3 . 1 . 1 . 5/4
    = 15/4
    = 3,75