Tangent to CurveKeyCreator \ Create \ Vector \ Tangent-to-Curve
Location: Create>Vector>Tangent to Curve
Use the Tangent to Curve function operation will evenly distribute a specified number of tangent vectors along a given curve.
NOTE: Depending upon the tangent vector option you had chosen, you may be required to interact more before the vector can be created. For instance, if the Number option is selected, you will be required to enter the number of points desired to define the vector.