Hi,
Can you help me with the following question please?
3sinx = sin3x
My working:
3sinx - sin3x = 0
3sinx - sin(x + 2x) = 0
3 sinx - sinx - sin2x = 0
2sinx - 2sinxcosx =0
2sinx ( 1 - cos x) = 0
2 sinx = 0 x= 0 x = 0 and 360 degrees
1 - cos x = 0 cos x = 1 x = 0 and 360 degrees.
Can you help I think I have missed a value between 0 and 360?
Thanks
Cromlix