jika tan A=2,4,maka sin 2A=
Matematika
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Pertanyaan
jika tan A=2,4,maka sin 2A=
1 Jawaban
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1. Jawaban Anonyme
TriGonoMetRi
tan A = y/x = 2,4 = 24/10 = 12/5
r = √(y² + x²) = √(12² + 5²) = 13
sin 2A
= 2 sin A cos A
= 2 . y/r . x/r
= 2 . 12/13 . 5/13
= 120/169 ✔