# Trigo

**URL:** <https://forum.kirupa.com/t/trigo/112311>\
**Category:** Uncategorized\
**Created:** [June 6, 2004, 2:13am UTC](https://forum.kirupa.com/t/trigo/112311 "2004-06-06T02:13:16Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![thybalt](https://avatars.discourse-cdn.com/v4/letter/t/e5b9ba/32.png) [@thybalt](https://forum.kirupa.com/u/thybalt)\
**Post date:** [June 6, 2004, 2:13am UTC](https://forum.kirupa.com/t/trigo/112311/1 "2004-06-06T02:13:16Z")

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I need to clarify something.

Am I right to say that when using trigo methods in Flash. Math.atan, atan2, cos, acos blah blah blah, the angles are calculated in counter-clockwise direction starting from 0 radians in the 1st quadrant (the quadrant in the upper-right corner)?

As for \_rotation, it’s in degrees in the clockwise direction?

Thanks 👁