Php tanh
From w3cyberlearnings
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PHP function tanh
This function returns the hyperbolic tangent of X, and X is angle. (Equal to: sinh(x)/cosh(x)).
Syntax tanh
X is a number
tanh(X)
Example 1
<?php echo tanh(M_PI_4); echo "<br/>"; echo tanh(M_PI_2); echo "<br/>"; echo tanh(0.45); echo "<br/>"; echo tanh(-0.45); ?>
Output
0.65579420263267 0.91715233566727 0.42189900525001 -0.42189900525001
