Calculating the inverse sine (SOLVED)

[suicidal pencil]

I need to calculate the inverse sine. For the formula sin(x) = a/b, I have a and b, but I need to figure out the angle, and I don't think that AGS has a built-in sin^-1(x) function.

[Gilbert]

Then you're not looking hard enough:
Maths.ArcSin()

[suicidal pencil]

*smacks head*

I never knew that the arcsine was the inverse sine >_<

thanks!