Question

prove it please i need it​

Answer 1

tan6x

Step-by-step explanation:

(sin7x+sin 5x)+ (sin 9x+sin 3x)/(cos 7x+cos 5x)+ (cos 9x+cos 3x)

2 sin 6x(cos x+cos 3x)/2 cos 6x(cos x+ cos 3x)

sin 6x/cos 6x

=tan 6x

R.H.S