If `cos^2theta-sintheta=1/4` then `sintheta=?`

If cos theta-4sintheta=1, the sintheta+4costheta=

If : cos theta+sintheta=1, "then" : cos theta-sintheta

If 3costheta=5sintheta , then ((5sintheta-2sec^(3)theta+2costheta)/(5sintheta+2sec^(3)theta-2costheta))=?

Prove that (cos theta-sintheta)/(cos theta+sintheta)=sec 2 theta-tan 2theta .

If x=(cos theta)/(1-sintheta), then (cos theta)/(1+sin theta) is equal to

2-cos^(2)theta =3 sintheta costheta , sintheta ne cos theta , then the value of tan theta is

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

If sintheta+sin^(2)theta = 1 then cos^(2)theta+cos^(4)theta is equal to :

If sintheta - costheta = 0 , then sin^4theta - cos^4theta = ?

If "cosec"theta+sintheta=(5)/(2) , then the value of ("cosec"theta-sintheta) is :