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247cos4x=1-8sin^(2)x cos^(2)xquad " seen...

247cos4x=1-8sin^(2)x cos^(2)xquad " seen that "

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cos 4x =1- 8 sin ^(2) x cos ^(2) x

cos 4x =1- 8 sin ^(2) x cos ^(2) x

cos 4x =1- 8 sin ^(2) x cos ^(2) x

cos 4x =1- 8 sin ^(2) x cos ^(2) x

cos 4x =1- 8 sin ^(2) x cos ^(2) x

Prove that :cos4x=1-8sin^(2)x cos^(2)x

sin^(4)x+cos^(4)x=1-2sin^(2)x cos^(2)x

If int(sin^(8)x-cos^(8)x)/(1-2sin^(2)x cos^(2)x)dx=a sin2x+C then a=

Prove that cos 4(x)=1-8 sin ^(2) (x) cos ^(2) (x)