PHP acos() Function

The acos() function is used to inverse sine numeric value between 0 and PI radians. which is the complementary function of cos().

Demo :

Example 1: Type No: 0
Example 2: Type No: -1
Example 3: Type No: 1

Following code useful to you for calculate radians between 0 and PI.

<?php
$acos_no = -1;
$result = acos($acos_no);
echo $result;
?>

In the above code is used to calculate for radians.In the acos() functions have used one parameters that name is float number.

If you need acos() function demo code download from following link.

Download