If `sin^4 theta+cos^4 theta=l+3+ksin^2thetacos^2theta` then

If sin^(4)theta+cos^(4)theta=2sin^(2)thetacos^(2)theta,theta is an acute angle , then the value of tantheta is

Prove the following: sin^4theta+cos^4theta=1-2sin^2thetacos^2theta

What is the value of sin^6theta+cos^6theta+3sin^2thetacos^2theta-1 ?

Prove the following sin^6theta+cos^6theta=1-3sin^2thetacos^2theta

sin^(6)theta+cos^(6)theta=1-3sin^(2)thetacos^(2)theta

sin^(6)theta=cos^(6)theta=1-3sin^(2)thetacos^(2)theta

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

Find the value of (sin^4theta+cos^4theta)/(1-2sin^2 thetacos ^2 theta)

If sin^(4) theta + cos^(4) theta = l + 3 +k sin^(2) theta cos^(2) theta then