(3cos^(2)2x-cos^(2)6x+sin4x-sin theta x)...

(3cos^(2)2x-cos^(2)6x+sin4x-sin theta x)

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

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

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

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

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