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