Recent content by ikeoe

Great, thanks to Tac-Tics.

Thank you, tiny-tim. CAD is Computer Aided Design mostly used from AutoDesk AutoCAD.

Homework Statement Can someone help me to find angle between 2 lines in 3D? I have 2 lines from (-x, 0, -y) to (0, 0, 0) to (0, x, y). I can use CAD to get the answer. But my shop guys will need some kind of formula. The easier way please, thank all. Homework Equations Example: (-10...