Angle between ends of curves

Is there a simple command or method to measure the angle between the ends of two curves which are not tangent, ie there is a kink between the curves? I’m looking for something simpler than creating tangent lines and measuring the angle between the lines, and more accurate than using Angle with the end point and a point close to the end of each curve. Various Rhino commands and functions internally check the angle of kinks in curves. Example: Curve Angle DC01.3dm (21.3 KB)

Found the answer. GCon returns angle between the curves.

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This information should have been posted in Rhino documentation:

I still believe that documentation is the worst part of Rhino. There are dozens of bugs and over 100 omissions.