Toloooongggg jawab dong. Dikumpul besok
Matematika
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Pertanyaan
Toloooongggg jawab dong. Dikumpul besok
1 Jawaban
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1. Jawaban munafilkhofa
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