himpunan penyelesaian sin (-1/2x -10) = -1/2

Mapel : Matematika
Kelas : X SMA
Bab : Trigonometri

Pembahasan :
Sin (-1/2x - 10) = -1/2
Sin (-1/2x - 10) = Sin 210° , Sin 330°

Sin (-1/2x - 10) = Sin 210°
-1/2x - 10 = 210
1/2x = -220
x = -440°

Sin (-1/2x - 10) = Sin 330
-1/2x - 10 = 330
1/2x = -340
x = -680°

Hp : {-440 , -680}