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PHP acosh() Function

PHP Math Reference

Example

Return the inverse hyperbolic cosine of different numbers:

<?php
echo(acosh(7) . "<br>");
echo(acosh(56) . "<br>");
echo(acosh(2.45));
?>

Definition and Usage

The acosh() function returns the inverse hyperbolic cosine of a number.

Syntax

acosh(number);

Parameter	Description
number	Required. Specifies a number

Technical Details

Return Value:	The inverse hyperbolik cosine of number
Return Type:	Float
PHP Version:	4.1+
PHP Changelog:	PHP 5.3: acosh() is now available on all platform

PHP Math Reference

PHP Math Reference

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