`cos^(2) 2x-cos^(2) 6x= sin 4x sin 8x`

Prove that: cos^(2)2x-cos^(2)6x=sin4x sin8x

Prove that: cos^2 2x-cos^2 6x= sin4x sin8x

Show that (i) sin ^(2) 6 x-sin ^(2) dot(4) x=sin 2 x sin 10 x (ii) cos ^(2) 2 x-cos ^(2) 6 x=sin 4 x sin 8 x

Prove that cos^(2)2x-cos^(2)6x=sin4xsin8x

Prove that cos^2 2x-cos^2 6x=sin4x sin8x

Prove the following: cos^2 2x-cos^2 6x=sin4xsin8x

Prove that: cos^2 2x-cos^2 6x=sin4xsin8x

Prove that cos^(2)2x-cos^(2)6x=sin4x.sin8x ?

Prove that sin 5 x cos 2x + cos 6 x sin 3 x = sin 8x cos x

Show that (sin 8x cos x - sin 6x cos 3x)/(cos 2x cos x - sin 3x sin 4x) = tan 2x