You can find any tool by the Menu Structure HERE: https://turbocaddoc.atlassian.net/wiki/display/TC21UG/Menu+Structure
You can find the menu location of any tool by name HERE: https://turbocaddoc.atlassian.net/wiki/display/TC21UG/Tools+Mapped+to+Menus
Tangent from Arc
Creates a tangent line from an arc, circle, or ellipse.
- Click on the side of the arc or circle from which you want to draw the tangent line.
- A tangent line appears from the selected point. Click to set the length, or enter the length in the Inspector Bar.
- Move the cursor to set the line angle, or enter the angle in the Inspector Bar.
To switch the side of the tangent line, pass the cursor through the tangency point.
