Copy of The Unit Circle and the Graphs of Sine, Cosine and Tangent
Set the radius of the circle using slider 'r'.
Select the checkbox to show one or more of the trig graphs.
Selecting the 'Show Angle' box will show the angle in radians.
Use the cursor to move point P around the circle.
Observe the graph and the circle.
How does the graph of the trig function change as the radius changes?
How is the tangent related to the point on the circle?