Question

Soal tentang trigonometri sudut istimewa

sin (-120) =
tan 135 =
cos 150 =
tan 225 =
sin 315 =
cos 300 =
cos (-315) =

Answer 1

Soal tentang trigonometri sudut istimewa

sin (-120) = - Sin 60 = - 1/2 akar 3
tan 135 = - Tan 45 = -1
cos 150 = - Cos 30 = -1/2 akar 3
tan 225 = Tan 45 = 1
sin 315 = - Sin 45 = - 1/2 akar 2
cos 300 = Cos 60 = - 1/2
cos (-315) = - Cos 45 = - 1/2 akar 2