- Jeff Corn
1. Move point C. The x value of point P represents the y value of point C and the y value of point P represents the x value of point C. Trace out one complete revolution of this circle. 2. In the input bar, graph tan(x). What do you notice? 3. Where do the "extra" parts of the graph of tangent come from ? 4. What in the world is going on at and ?