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<acosasin>
Last updated: Thu, 26 Jun 2008

acosh

(PHP 4 >= 4.0.7, PHP 5)

acosh — Inverse hyperbolic cosine

Description

float acosh ( float $arg )

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

ChangeLog

Version Description
5.3.0 This function is now available on all platforms

See Also



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Inverse hyperbolic cosine
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<acosasin>
Last updated: Thu, 26 Jun 2008
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