Indicate the relation which is true 

$tan \left | tan^{-1} x \right | = \left | x \right |$

$cot \left | cot^{-1}x \right | = x$

$tan^{-1} \left | tan\,x \right | = \left | x \right |$

$sin \left | sin^{-1} \right | = \left | x \right |$