acosh()

The built-in math function acosh() determines the inverse hyperbolic cosine of a number, in other words the value whose hyperbolic cosine is the input number. The output is a floating point number in radians.

Syntax

$result = acosh($number);

Where $number is the value that the inverse hyperbolic cosine will be based on.

Example

<?php
  echo(acosh(10));
?>

This will result in the following output:

2.9932228461264

Codebyte Example

The following code is runnable and demonstrates the use of acosh().

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