When using the trigonometric functions
of the Math
class, all units are in radians. You
have one or more angles measured in degrees and want to convert these
to radians in order to use them with the members of the
Math
class.
To convert a value in degrees to radians, multiply it by
π/180
:
using System; public static double ConvertDegreesToRadians (double degrees) { double radians = (Math.PI / 180) * degrees; return (radians); }
All of the static trigonometric methods in the
Math
class use radians as their unit of measure
for angles. It is very handy to have conversion routines to convert
between radians and degrees, especially when a user is required to
enter data in degrees rather than radians.
The equation for converting degrees to radians is shown here:
radians = (Math.PI / 180) * degrees
The static field Math.PI
contains the constant
π.