Asin
Purpose
Returns the arcsine (Asin), or inverse sine, of a 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).
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