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Unit Circle

Demonstration of the Unit Circle Formula & Graph

The Unit Circle is a circle with a radius of 1. The angle that we rotate the radius uses the greek letter θ.

Picture of the unit circle.



The first lesson to learn about the unit circle is what should repalce the red questions marks below. In other words, what is the x and the y coordinates of any point on the unit circle.
Answer
Picture of the Unit Circle

Demonstration of Unit Circle's Formula


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