Upgrade subject to access all content

Which one of the following is equivalent to $\csc(2x)$?

$\cfrac{\text{csc x}}{\text{2 cos x}}$

$\cfrac{2}{\text{sin x cos x}}$

$\sec(2x)$

$\text{csc x + csc x}$

$\cfrac{\text{2 sec x}}{\text{sin x}}$