acosh

(PHP 4 >= 4.1.0, PHP 5, PHP 7)

acoshInverse 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

See Also

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