Functions Reference

206 FileMaker Functions Reference
Examples
Acos(-0.5) returns 2.0943951.
Acos(-0.5)*180/Pi returns 120.
Degrees(Acos(-0.5)) returns 120.
Acos(2.0) ? (not a number).
Asin
Format
Asin (number)
Parameter
number - any numeric expression or field containing a numeric expression in the range
-1 to 1.
Data type returned
number
Description
Returns the arcsine, or inverse sine, of a number. The arcsine is the angle whose sine is
number. The returned angle is given in radians in the range -Pi/2 to Pi/2. The input
number parameter must be between -1 and 1.
To express the arcsine in degrees, multiply the result by 180/Pi or use the Degrees
function, page 207.
Examples
Asin(-0.5) returns -0.523598776.
Asin(-0.5)*180/Pi returns -30.
Degrees(Asin(-0.5)) returns -30.
Asin(2) ? (not a number).
Atan
Format
Atan(number)
Parameter
number - any numeric expression
or field containing a numeric expression