tentukan himpunan penyelesaian dari

tan x = ∛
x = 60°

x = a·k+360
k = 0 → 60+0·360 = 60
k = 1 → 60+1·360 = 420
k = 2 → 60+2·360 = 780 (tdk dipakai)

x = -a·k+360
k = 0 → -60·0+360 = -60
k = 1 → -60·1+360 = 300
k = 2 → -60·2+360 = 660 (tdk dipakai)

hp = {300°, 420°}