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asin acos

Last updated: Fri, 26 Jan 2007

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# acosh

(PHP 4 >= 4.1.0, 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`.

> Замечание: Для Windows-платформ эта функция не реализована.

See also: acos(), asinh(), and atanh().

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asin acos

Last updated: Fri, 26 Jan 2007
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