If pi/2 < theta < pi, then sqrt((1- sin ...

If `pi/2 < theta < pi, then sqrt((1- sin theta)/(1+ sin theta))+sqrt((1+ sin theta)/(1- sin theta))` is equal to

A

`2 sec theta`

B

`-2 sec theta`

C

`2 cosec theta`

D

`2 cos theta `

Verified by Experts

The correct Answer is:

B

|

lim_(x to pi/2) (1+cos 2x)/(pi-2x)^2

A

1

B

2

C

3

D

`1/2`

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