ASIN (N1)
* Where N1 is the sine of the angle and is from -1 to 1.
* Calci returns the arcsine (inverse sine) of a number.
* If you want to convert arcsine to the degrees, multiply it by 180/PI
The number can be a single value or any number of values.
For example, ASIN(0.5,(-0.2),1) can give the arcsine or inversesine values for each element.