Railo 4.2 Reference
Choose a function:

Function ASIN

Determines the arcsine of a number. The arcsine is the angle
whose sine is number.


asin(number number):number


The arguments for this function are set. You can not use other arguments except the following ones.
Name Type Required Description
number number  Yes Sine of an angle. The value must be between -1 and 1, inclusive.