Investigating Relationships Between Tan & Cot Functions
Click and drag the point (x, y) around the circle in a counterclockwise direction.
You will simultaneously see one full cycle of the cotangent function y = cot(x) traced in blue and one full cycle of the tangent function y = tan(x) traced in red.
The degrees that are shown inside the circle correspond with the radian angle measures along the x-axis. For example, 90 degrees = pi/2 radians.