Answer
$\pi$
Work Step by Step
Value of certain composite functions formula:
$f(f^{-1}(x)) = \tan{(\tan^{-1}{x})}= x \hspace{25pt} -\infty \leq x \leq \infty$
Thus,
$\tan{\left(\tan^{-1}{(\pi)} \right)} = \boxed{\pi}$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.