Express it in terms of `sintheta` :
`(1-cos^2theta)/(1+cos^2theta)`

Express tan theta in terms of cos theta

1+cos theta=2cos^(2)theta

Express cos4 theta in terms of cos theta

(sintheta+sin2theta)/(1+costheta+cos2theta) =

(sintheta+sin2theta)/(1+costheta+cos2theta)=?

sintheta=7/25 then sqrt((1-cos theta)/(1+cos theta))=

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

1- (sin ^ (2) theta) / (1 + cos theta) + (1 + cos theta) / (sin theta) - (sin theta) / (1-cos theta) - (1) / (sec theta)

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

For 0^(@) lt theta lt 90^(@) which of the following expression is of theta ? (i) costheta(1- sin theta)^(-1) + cos theta (1 + sintheta)^(-1) (ii) cos theta (1+ "cosec"theta)^(-1) + cos theta ("cosec"theta -1)^(-1) Choose the correct code among following.