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" (Prove than "cos^(6)A-sin^(6)A=cos2A(1...

" (Prove than "cos^(6)A-sin^(6)A=cos2A(1-(1)/(4)sin22A)

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Prove that: cos^(6)A-sin^(6)A=cos2A(1-(1)/(4)sin^(2)2A)

cos^6A-sin^6A=cos2A(1-1/4sin^2 2A)

Prove the following : cos^6A-sin^6A = cos2A(1-1/4 sin^2 2A)

cos ^ (6) A-sin ^ (6) A = cos2A (1- (1) / (4) sin ^ (2) 2A)

cos^(6)A+sin^(6)A=1-3/4sin^(2)(2A)

cos^(6)A+sin^(6)A=1-3/4sin^(2)(2A)

Prove that cos^6 theta-sin^6theta=cos2theta(1-1/4 sin^2 2 theta)

Prove that sin^(6)theta+cos^(6)theta=1-(3)/(4)sin^(2)2 theta

Prove that : sin^(6)A+cos^(6)A+3sin^(2)Acos^(2)A=1

Prove that : sin^(6)A+cos^(6)A+3sin^(2)Acos^(2)A=1