Find the maximum and minimum values of `cos^2theta-6sinthetacostheta+3sin^2theta+2.`

The minimum value of 7 cos theta + 24 sin theta is

Find the minimum value of 9tan^2theta+4cot^2theta

Solve : 3-2 cos theta -4 sin theta - cos 2theta+sin 2theta=0 .

Solve 7cos^2theta+3sin^2theta=4

The maximum value of the expression 1/(sin^2theta+3sinthetacostheta+5cos^2theta)

If sin^2theta_1+sin^2theta_2+...+sin^2theta_n=0 , then find the minimum value of costheta_1+costheta_2+...+costheta_n .

Range of f(theta)=cos^2theta(cos^2theta+1)+2sin^2theta is

Solve 2 cos^(2) theta+3 sin theta=0