Evaluate for cosine of an angle on the unit circle larger than 2pi

The video tutorial explains how to work with angles in a circle, focusing on simplifying angles like 12π/6 and 11π/6. It discusses the concept of reference angles and how to determine the quadrant of an angle. The tutorial concludes by calculating the cosine of an angle using reference angles and understanding the properties of the unit circle.

What are the coordinates of the angle π/6 on the unit circle?

Explain why cosine 11π/6 is equal to cosine π/6.