[4[a sin^(8)theta+cos^(8)theta-1=0(8)/(8),pi cos^(2)theta sin^(2)theta sin^(2)theta cos^(2)pi|7-cos^(2)4(pi)/(8)],[(u ln theta!=0 pi/n/2)?]

Prove: sin^(8)theta-cos^(8)theta=(sin^(2)theta-cos^(2)theta)(1-2sin^(2)thetacos^(2)theta)

If sin^(8)theta+cos^(8)theta-1=0 then what is the value of cos^(2)theta sin^(2)theta

If sin^(8)theta+cos^(8)theta-1=0 , what is the value of cos^(2)thetasin^(2)theta (if thetane0or(pi)/(2)) ?

(sin^(8)theta-cos^(8)theta)/(cos2theta(1+cos^(2)2theta))=?

If sin theta + sin^(2) theta =1 then cos^(4) theta + cos^(8) theta + 2 cos^(6) theta =

(3+cos4 theta)cos2 theta=4(cos^(8)theta-sin^(8)theta)

Prove that (3 + cos 4theta) cos 2theta = 4(cos^(8)theta - sin^(8)theta) .

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