Asin
Purpose 
Returns the arcsine (Asin), or inverse sine, of number.
Format 
Asin (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 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.
Examples 
Asin(-0.5) returns -0.523598776.
Asin(-0.5)*180/Pi returns -30.
Degrees(Asin(-0.5)) returns -30.
Asin(2)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
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