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# deg2rad

(PHP 3 >= 3.0.4, PHP 4, PHP 5)

deg2rad -- Converts the number in degrees to the radian equivalent

## Description

float deg2rad ( float number )

This function converts number from degrees to the radian equivalent.

Example 1. deg2rad() example
`<?php echo deg2rad(45); // 0.785398163397 var_dump(deg2rad(45) === M_PI_4); // bool(true) ?>`

See also rad2deg().

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