One can't just tell the program to graph it because it is not part of the program, so one must go through a long series of constructions of circles and lines to be able to trace a point that will graph the tangent graph. It was difficult at first, but with a little knowledge of the program it can be a fun challenge. The GS gives anyone the opportunity to make his or her creative ideas more than just ideas, but into visual graphics. It gives greater flexibility to an assignment, allowing one to stimulate the mind. Now this gives everyone a chance to do something challenging that involves geometry and math, as well as their imagination.
Students seem to do much better in class if they are given much more freedom to do what they like.
So an assignment saying just to make an animation allows them to make whatever they please, be it a swing, a car, a unicyclist. On that one such assignment I decided to go out of this world, literally. I made a two dimensional space ship with it's two ends on two different sized, hidden circles. When the ends of the ship went around the circles as different speeds, it made the ship get smaller and larger, appearing as if it were moving back and forth. It would also turn to the sides as if moving from left to right and vice-versa.