How to get Ruler Tool angle measurement

Good afternoon all,

I'm struggling to find a way on how to use the angle displayed when tracing a line with the ruler tool.

This is in order to amend a script that now uses as a condition the width of the active layer: if bigger than n px do this, else do that. It just works fine.

I need to do the same but using the angle traced by a user (before running the script).

BUT I cannot find a way to use that angle measure.

Any help please?

Thanks a lot,

MD