Find all solutions theta in the interval 0 2 pi 2 tan theta

Find all solutions theta in the interval [0, 2 pi): 2 tan theta sin theta - tan theta= 0

2tan theta sin theta - tan theta=0

tan theta(2sin theta-1)=0

tan theta=0 and sin theta=1/2

theta=tan^-10 and theta = sin^-11/2

theta=0,pi and theta= pi/6, 5pi/6

theta=0,pi/6,5pi/6,pi