Question

Tolong jawabkan donk,,kalo bisa pakai cara ya,,tapi kalo gak gapapa,yang penting jawaban nya.
makasih :)

Answer 1

1. 220 = 220 x(π/180) = (11π/9) atau 1 2/9π (C)
2. sin 330 = sin(360 - 30) = - sin 30 = -1/2
4.sin(-210) = - sin 210 = -sin(180+30) = sin 30 = 1/2
5.sin 540 + sin 180 = sin(360+180) + sin 180 = sin 180 + sin 180 = 0 + 0 = 0
8. sin 240 = sin(180 + 60) = - sin 60 = -1/2 √3