2sin3x -1 = 0

To solve 2sin3x - 1 =
0

2sin3x -1 +1 = 0+1

2sin3x =
1

sin3x =1/2 =sin 30 = sin (n*180+(-1)^n* 30) deg, n
=0,1,2,...

3x = (180n+(-1)^n*30)/3 deg, n= 0,
1,2,...

x= (180n+(-1)^n30)/3 deg,
n=0,1,2...

x = (60n+(-1)^n*10) deg, n=
0,1,2,3..

x= 10 , 50,   130,   170, 250, 290, 370  in deg
 etc