# The Tangent line and the Unit Circle

- Author:
- Chris Wells

- Topic:
- Circle, 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

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