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

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

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

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

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

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

Prove the following: cos^2 2x - cos^2 6x = sin 4x sin 8x

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: (i) "sin"^(2)6x-"sin"^(2)4x="sin" 2x sin 10x (ii) cos^(2)2x-cos^(2)6x="sin" 4x sin 8x .

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