deg function in PHP2rad() function

Returns2Text

The rad() function converts degrees to radian values. It returns the radian equivalent value of the specified degree value.

Returns2Syntax

rad(num)

• Parameter-num

The degree value to be converted to radians.

Returns2The rad() function returns the radian equivalent value of the specified degree value.

Example

<?php
　　　$degVal =　360;
　　　$radVal = deg2rad($degVal);
　　　echo "$degVal degrees converted to $radVal radians!";
?>

Output Result

360 degrees converted to　6.2831853071796　radians!

Let's see another example-

Example

<?php
　　　echo deg2rad("45) . "<br>";
　　　echo deg2rad("90") . "<br>";
　　　echo deg2rad("180") . "<br>";
　　　echo deg2rad("270") . "<br>";
　　　echo deg2rad("360);
?>

Output Result

0.78539816339745<br>1.5707963267949<br>3.1415926535898<br>4.7123889803847<br>6.2831853071796