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.

Parameters

arg

The argument to process

Return Values

The hyperbolic cosine of arg

See Also

• cos() - Cosine
• acosh() - Inverse hyperbolic cosine
• sinh() - Hyperbolic sine
• cosh()