acosh
(PHP 4 >= 4.1.0, PHP 5, PHP 7, PHP 8)
acosh — Inverse hyperbolic cosine
Description
acosh(float $num): float
Returns the inverse hyperbolic cosine of num, i.e. the value whose hyperbolic cosine is num.
Parameters
-
num -
The value to process
Return Values
The inverse hyperbolic cosine of num
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Licensed under the Creative Commons Attribution License v3.0 or later.
https://www.php.net/manual/en/function.acosh.php
