angleInDegrees - any numeric expression or field containing a numeric expression, in degrees

number

The parameters for FileMaker Pro trigonometric functions must be expressed in radians. If the values you want to use as parameters in a trigonometric equation are in degrees, use this function to convert them to radians first. A degree is equal to Pi/180 radians.

Radians(45) returns .78539816....

Sin(Radians(30)) returns .5.