Tan 2x = - akar 3 Mohon bantuannya

tan 2x  = - √3 = - tan 60 = tan(180-60) 
tan 2x = tan 120
2x = 120 + n. 180
x = 60 + n. 90
n = 0, 1, 2, ...
n = 0 , x = 60
n = 1 , x = 60 + 90 = 150
n = 2 , x = 60 + 180 = 240
n = 3 , x = 60 + 270 = 330