# The Secant and the Unit Circle

- Author:
- Chris Wells

- Topic:
- Circle, Trigonometry, Unit Circle

The applet uses the unit circle to demonstrate how the relationship between sine, cosine and secant 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 secant varies