Tanh () PHP Function

The tanh () PHP Function is used to find the hyperbolic tangent of the imputed number. So tanh (x) would return the hyperbolic tangent of x, or sinh (x)/cosh(x). Here is an example:

<?php
echo(tanh(1) . "<br />");
echo(sinh(1)/cosh(1) . "<br />");
?>

This would return:
0.76159415595576
0.76159415595576