Solve for 'x'
sinx - sin2x =0
The thing is I know the solution but I am confused a bit. So the actual solution is :
sinx = sin2x
sinx = sin(180-2x)
Comparing both side
x = 180-2x
3x =180
x = 60

But I am confused on why cant i apply this solution
sinx = sin2x
comparing both side
x = 2x
x -2x =0
-x = 0
x=0