If `f(theta) = sin(tan^(-1)(sintheta/sqrt(cos2theta)))`, where `-pi/4 lt theta lt pi/4,` then the value of `d/(d(tantheta))\ f(theta)` is

If f(theta) = sin(tan^(-1)(("sin theta)/(sqrt(cos 2 theta)))) , where -pi/4 lt theta lt pi/4 , then the value of d/(d(tan theta)) f(theta) is

Let f(theta)=sin(tan^(-1)((sintheta)/(sqrt(cos2theta)))) , where -pi/4ltthetaltpi /4 then the value of d/ (d(tantheta)) f(theta) is

Let f(theta)=sin(tan^(-1)((sintheta)/(sqrt(cos2theta)))) , where -pi/4ltthetaltpi /4 then the value of d/ (d(tantheta)) f(theta) is

Let f(theta)=sin(tan^(-1)((sintheta)/(sqrt(cos2theta)))) , where -pi/4ltthetaltpi /4 then the value of d/ (d(tantheta)) f(theta) is

Let f(theta)=sin(tan^(-1)((sintheta)/(sqrt(cos2theta)))) ,w h e r e -pi/4ltthetaltpi /4 then the value of d/ (d(tantheta)) f(theta) is

Let f(theta)=sin(tan^(-1)((sin theta)/(sqrt(cos2 theta)))), wher e-(pi)/(4)

Let f(theta)=sin(tan^(-1)((sintheta)/sqrt(cos2theta))) ",""where" -(pi)/(4)ltthetalt(pi)/(4),"then the valueof " (d)/(d(tantheta)){f(theta)} is -

If f(theta)=sin(tan^(-1)((sin theta)/(sqrt(cos2 theta)))), where -(pi)/(4)

If sec theta=2cos theta , where (pi/2) lt theta lt pi , then what is the value of theta ?