PHP acosh() Function
Example
Return the inverse hyperbolic cosine of different numbers:
<?php
echo(acosh(7) . "<br>");
echo(acosh(56) . "<br>");
echo(acosh(2.45));
?>
Run example »
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
