If `cos^2theta=1/2` then find the value of `sin^2theta`

If cot theta =1//2 then find the values of sin2 theta and cos 2theta

If sintheta+costheta=1/2 then find the value of 16(sin2theta+cos4theta+sin6theta)

If costheta+cos^(2)theta=1 , then find the value of sin^(4)theta+sin^(2)theta .

If sec theta=cos^(2)theta then find the value of sin^(4)theta+2sin^(3)theta+sin^(2)theta

If 3cos theta=1, find the value of (6sin^(2)theta+tan^(2)theta)/(4cos theta)

If cos theta=(5)/(13), find the value of (sin^(2)theta-cos^(2)theta)/(2sin theta cos theta)xx(1)/(tan^(2)theta)

If sintheta+sin^(2)theta=1 , then find the value of cos^(2)theta+cos^(4)theta .

If 1/(sin^(2)theta)-1/(cos^(2) theta)-1/(tan^(2)theta)-1/(cot^(2)theta)-1/(sec^(2)theta)-1/(cosec^(2)theta)=-3 then find the value of theta .

If sin theta=12/13 find the value of (sin^2 theta-cos^2 theta)/(2sin theta cos theta)xx1/(tan^2 theta)

If sin theta=(12)/(13), find the value of (sin^(2)theta-cos^(2)theta)/(2sin theta cos theta)xx(1)/(tan^(2)theta)