php8.5
/
Download
Home/ Manual/ math / functions/ acosh

acosh

PHP function Edit on GitHub ✎

(PHP 4 >= 4.1.0, PHP 5, PHP 7, PHP 8)

Inverse hyperbolic cosine

Description

acosh(float $num): float

Returns the inverse hyperbolic cosine of num, i.e. the value whose hyperbolic cosine is num.

Parameters

num

The value to process

Return Values

The inverse hyperbolic cosine of num

See Also

Source: reference/math/functions/acosh.xml · from the official PHP manual (php/doc-en)