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" प्रश्न "10.sin^(4)x...

" प्रश्न "10.sin^(4)x

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

Solev (sin^(2) 2x+4 sin^(4) x-4 sin^(2) x cos^(2) x)/(4-sin^(2) 2x-4 sin^(2) x)=1/9 .

Solve (sin^(2) 2x+4 sin^(4) x-4 sin^(2) x cos^(2) x)/(4-sin^(2) 2x-4 sin^(2) x)=1/9 .

sin ^(2) 6x - sin ^(2) 4x = sin 2x sin 10x

sin ^(2) 6x - sin ^(2) 4x = sin 2x sin 10x

sin ^(2) 6x - sin ^(2) 4x = sin 2x sin 10x

sin ^ (2) 6x-sin ^ (2) 4x = sin2x sin10x