=sin3x = 1
cos6x - 4cos4x - 8cos2x =
sin3x=1 in case only when x=n pi/2
and so it cannot be equal to Sinx + sin2x
recheck ur ques!
Sinx + sin2x=sin3x = 1
cos6x - 4cos4x - 8cos2 =
Explain also please
=sin3x = 1
cos6x - 4cos4x - 8cos2x =
sin3x=1 in case only when x=n pi/2
and so it cannot be equal to Sinx + sin2x
recheck ur ques!
the correct question should be
Sinx + sin2x+sin3x = 1
cos6x - 4cos4x - 8cos2x = ?