# Inverse trigonometric function?

**URL:** https://forum.kirupa.com/t/inverse-trigonometric-function/301302
**Category:** Uncategorized
**Created:** [December 7, 2009, 9:20am UTC](https://forum.kirupa.com/t/inverse-trigonometric-function/301302 "2009-12-07T09:20:52Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![ash\_at\_risk](https://avatars.discourse-cdn.com/v4/letter/a/2bfe46/32.png) [@ash\_at\_risk](https://forum.kirupa.com/u/ash_at_risk)
#### Post date: [December 7, 2009, 9:20am UTC](https://forum.kirupa.com/t/inverse-trigonometric-function/301302/1 "2009-12-07T09:20:52Z")

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Hi all ,  
is it possible to perform inverse trigonometric function using AS3?  
Actually , i want to calculate the angle of incidence of ball to the wall then reflect back it to angle of reflect.  
Sin i=Sin r

Like the very famous game of bricks, ball hitting to brick need to be catch on a small platform