Math, asked by jayakrishnanb8, 1 year ago

Sin3x+sin2x-sinx=4sinx cosx/2 cos3x/2?

Answers

Answered by kvnmurty
15
(Sin 3x - Sin x) + Sin 2 x 

= 2 Sin x Cos 2x + 2 Sin x Cos x

= 2 Sin x [ Cos 2x + Cos x ] 
 
= 2 Sin x * 2 Cos 3x/2 Cos x/2

=RHS

Similar questions