Solve: `2sin^(2)theta+sin^(2)2theta=2`

Solve 7sin^(2)theta+2cos^(2)theta=4

Solve the equation : 2sin^(2)theta+sin^(2)theta=2 for theta in (-pi,pi) .

Solve the equation : 2sin^(2)theta+sin^(2)theta=2 for theta in (-pi,pi) .

Solve 7 cos^(2) theta+3 sin^(2) theta=4 .

Solve 7cos^(2)theta+3sin^(2)theta=4 .

Prove that sin^(2)theta+sin^(2)2 theta+sin^(2)3 theta+....+sin^(2)n theta=(n)/(2)-(sin n theta cos(n+1)theta)/(2sin theta)

Solve sin^(2) theta gt cos^(2) theta .

Solve sin^(2) theta gt cos^(2) theta .

Solve cos^(4)theta-sin^(4)theta=cos^2theta