PHP deg2rad() function

Description

The deg2rad() function is used to convert a number in degrees to its radian (the standard unit of angular measure, used in many areas of mathematics) equivalent.

Version:

(PHP 4 and above)

Syntax:

deg2rad (num)

Parameter:

Return value:

The radian equivalent of num.

Value Type: Float.

Pictorial Presentation

Example:

<?phpecho 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

PHP Function Reference

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