Question

Jika tan 17 = a, maka sin 34=...?

Answer 1

Verified answer

Materi : Trigonometri



tan17 = a
maka 
sin17 = a / √(a² + 1)
cos17 = 1/ √(a² + 1)

sin34
= sin 2(17)
= 2 sin17 . cos17
= 2 (a / √(a² + 1)) . (1 / √(a² + 1))
= 2a / (a² + 1)