cosSeries ( angleInRadians ; series ; k )
cosSeries returns the cosine of an angle as precise as you want, without the limitations of the built-in cosine function.
Average rating: 4.2 (32 votes) Log in to vote
OshVay Systems, Inc.
cosSeries( 1; 0; 0);
Function definition: (Copy & paste into FileMaker's Edit Custom Function window)
With FileMaker 7 came the capacity for storing numbers with 400 decimal digits of precision. However, FileMaker's built-in trigonometric functions still only evaluate to 16 places; cosSeries returns the cosine of an angle [in radians] as precise as you want (with use of the SetPrecision function) by recursively adding the terms of a power series. The last two arguments to the cosSeries function are for the function's own use in recursive calls, and each should always be 0 when called by the developer.
Note: these functions are not guaranteed or supported by BrianDunning.com. Please contact the individual developer with any questions or problems.