Question

sin2x + 2sin4x +sin6x = 4cos^2xsin4x​

Answer 1

Answer:

hope it will help you...God bless you..

Step-by-step explanation:

sin2x+2sin4x+sin6x

=(sin6x+sin2x)+2sin4x

=2sin(26x+2x)cos(26x−2x)+2sin4x

=2sin4xcos2x+2sin4x

=2sin4x(cos2x+1)

=2sin4x×2cos2x=4cos2xsin4x