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(7)sin^(4)theta-cos^(4)theta=1-2cos^(2)t...

(7)sin^(4)theta-cos^(4)theta=1-2cos^(2)theta

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" 1) sin^(4)theta-cos^(4)theta=1-2cos^(2)theta

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

sec^(2)theta-(sin^(2)theta-2sin^(4)theta)/(2cos^(4)theta-cos^(2)theta)=1

The value of (2(sin^(6)theta+cos^(6)theta)-3(sin^(4)theta+cos^(4)theta))/(cos^(4)theta-sin^(4)theta-2cos^(2)theta) is :

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

Prove that : sin^(4)theta + cos^(4)theta = 1 - 2 cos^(2) theta + 2 cos^(4)theta

Prove that : sin^(4)theta + cos^(4)theta = 1 - 2 cos^(2) theta + 2 cos^(4)theta

Prove: sin^4 theta - cos^4theta = 1 - 2cos^2 theta

Prove that sin^4 theta - cos^4 theta = 1 - 2cos^2 theta

Prove that: sin^4 theta - cos^4 theta= 1-2 cos^2 theta .