If `pi/2 < theta < (3pi)/2` then `sqrt ((1-sin theta)/(1+sin theta))=`
`a. sec theta-tan theta, b. sec theta + tan theta, c. tan theta-sec theta, d.` none of these

Explanation

We have,


`sqrt((1-sin theta)/(1+sin theta))=sqrt((1-sin theta)^2/(1-sin^2theta)`


`sqrt((1-sin theta)/(1+sin theta))=(1-sin theta)/(|cos theta|`


`sqrt((1-sin theta)/(1+sin theta))=(1-sin theta)/(-cos theta`


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