MySQL RADIANS() Function

Convert a degree value into radians:

SELECT RADIANS(180);

Definition and Usage

The RADIANS() function converts a degree value into radians.

Note: See also the DEGREES() and PI() functions.

RADIANS(number)

Parameter	Description
number	Required. A number in degrees

Works in:	From MySQL 4.0

Convert a degree value into radians:

SELECT RADIANS(-45);