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

if sintheta-costheta=0, then the value of (sin^4theta+cos^4theta)

The value for 2(sin^6theta+cos^6theta)-3(sin^4theta+cos^4theta) +1 is

Prove the following identities: 2(sin^6theta+cos^6theta)-3(sin^4theta+cos^4theta)+1=0 sin^6theta+cos^6theta+3sin^2thetacos^2theta=1 (sin^8theta-cos^8theta)=(sin^2theta-cos^2theta)(1-2s in^2thetacos^2theta)

Find the value of 6(sin^6theta+cos^6theta)-9(sin^4theta+cos^4theta)+4

2(sin^(6) theta + cos^(6)theta) - 3(sin^(4)theta + cos^(4)theta)+ 1 = 0

2(sin^6theta+cos^6theta)-3(sin^4theta+cos^4theta) is equal to (a) 0 (b) 1 (c) -1 (d) None of these

2(sin^6theta+cos^6theta)-3(sin^4theta+cos^4theta) is equal to 0 (b) 1 (c) -1 (d) None of these

4(sin^(6)theta+cos^(6)theta)-6(sin^(4)theta+cos^(4)theta) is equal to

int_0^(pi/4) (2sinthetacostheta)/(sin^4theta+cos^4theta)d theta

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