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.

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