$\sqrt{\frac{\sec \theta-1}{\sec \theta+1}}$ এর মান কত ?

$\sec \theta+\operatorname{cosec} \theta$

$\operatorname{cosec} \theta-\cot \theta$

$\operatorname{cosec} \theta+\cot \theta$

$\cot \theta-\operatorname{cosec} \theta$