Question

Find all solutions of the equation in the interval , 02π . =+2sinθ20 write your answer in radians in terms of π .

Answer 1

Hello : 
2sin2θ= 0
sin2θ =0
2θ= kπ
θ= kπ/2
 in [0 , 2π] :
k=0     x =  π/2