The Tangent line and the Unit Circle

Author:
Chris Wells
Topic:
Circle, Tangent Line or Tangent, Trigonometry, Unit Circle
The applet uses the unit circle to demonstrate how the relationship between sine, cosine and tangent varies as the central angle changes. The Unit Circle has a diameter of one unit and is centred at x-y coordiates of 0,0
Drag point P to see how the relationship between sine, cosine and tangent varies