To set tangent constraint options
         
         
            - If you want to create a tangent constraint now, select one or more objects. The last object selected will be the constrained
               object.
            
- Select Constrain > Tangent >  . .
-  Set the constraint options.
                  - Click  or  to create tangent constraint.
                  
- In the window’s  menu, select  to save the constraint options.
                  
- In the window’s  menu, select  to reset to the default constraint options.
                  
- Click  to close the  window.