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Last updated: Fri, 26 Jan 2007

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# cosh

(PHP 4 >= 4.1.0, PHP 5)

cosh -- Hyperbolic cosine

## Description

float cosh ( float arg )

Returns the hyperbolic cosine of `arg`, defined as `(exp(arg) + exp(-arg))/2`.

See also: cos(), acosh(), sin(), and tan().

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decbin cos

Last updated: Fri, 26 Jan 2007
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