PHP deg2rad() function
The deg2rad() function is used to convert a number in degrees to its radian (standard unit of angular measure, used in many areas of mathematics) equivalent.
Version
(PHP 4 and above)
Syntax
deg2rad (num)
Parameter
| Name | Description | Required / Optional |
Type |
|---|---|---|---|
| num | Angular value in degree. | Required | Float |
Return value
The radian equivalent of num.
Value Type : Float.
Pictorial Presentation
Example :
<?php
echo deg2rad("45") . '<br>';
echo deg2rad("20") . '<br>';
echo deg2rad("90") . '<br>';
?>
Output :
0.78539816339745
0.34906585039887
1.5707963267949
View the example in the browser
See also
