Tentukan himpunan penyelesaian dari sin 5x= sin75°, 0≤x≤ 360°

sin 5x = sin 75
5x = 75 + k.360
x = 15 + k.72
k= 0,x= 15°
k=1, x = 87°
k =2, x = 159°
k=3, x = 231°
k = 4, x = 303°

5x = 105 + k.360
x = 21 + k.72
k=0, x = 21°
k=1, x = 93°
k=2, x = 165°
k = 3, x = 237°
k = 4, x = 309°

HP = {15°, 21°, 87°, 93°, 159°, 165°, 231°, 237°, 303°, 309°}