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FILEMAKER PRO HELP 945
Acos
Purpose
Returns the arccosine (Acos), or inverse cosine, of number.
Format
Acos (number)
Parameters
number - any numeric expression or field containing a numeric expression in the range -1 to 1
Data type returned
number
Originated in
FileMaker Pro 9.0
Description
The arccosine is the angle whose cosine is number. The returned angle is given in radians in the
range 0 (zero) to Pi. The input number parameter must be between -1 and 1.
If you want to convert the result from radians to degrees, multiply it by 180/Pi or use the Degrees
function.
Examples
Acos(-0.5) returns 2.0943951.
Acos(-0.5)*180/Pi returns 120.
Degrees(Acos(-0.5)) returns 120.
Acos(2.0)returns ? (not a number).
Related topics
Functions reference (category list)
Functions reference (alphabetical list)
About formulas
About functions
Defining calculation fields
Using operators in formulas
Asin
Purpose
Returns the arcsine (Asin), or inverse sine, of number.