Mouse menu: Contextual->Tangent in line
Using this option, you can pick over a line in the graphical window. A vector will be returned that is the tangent to the line at the point you have picked.
Mouse menu: Contextual->Tangent in line
Using this option, you can pick over a line in the graphical window. A vector will be returned that is the tangent to the line at the point you have picked.