acosacosh
(PHP 4 >= 4.0.7, PHP 5)
acosh — Inverse hyperbolic cosine
Popis
float acosh
( float $arg
)
Returns the inverse hyperbolic cosine of arg , i.e. the value whose hyperbolic cosine is arg .
Note: Táto funkcia nie je implementovaná na platformách Windows.
Parametre
- arg
-
The value to process
Vrátené hodnoty
The inverse hyperbolic cosine of arg
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