How to evaluate a function for a point on a graph

The video tutorial covers the concept of the unit circle, explaining how to graph angles and understand coterminal angles. It discusses breaking down angles into thirds and the significance of π. The tutorial also provides a method to evaluate cosine for angles larger than 2π by simplifying the process and finding coordinate points on the unit circle. The focus is on understanding periodicity and using coterminal angles to simplify calculations.

How can you simplify the evaluation of angles that require multiple revolutions around the circle?

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What are the coordinates for the angle π/3 on the unit circle?

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What is the relationship between the coordinates of a point on the unit circle and the cosine of the angle?

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