Determining where a point is on the unit circle

The video tutorial covers the end of the semester and upcoming exams, followed by an in-depth explanation of the unit circle, radians, and how to divide a circle into quarters and thirds. The instructor explains the concept of radians, the significance of pi and 2pi, and how to locate specific points on the unit circle, such as 5pi/4 and 5pi/3. The tutorial also includes instructions on evaluating trigonometric functions at these points.

Describe the process of dividing a circle into fourths and how it relates to radians.

How do you evaluate the six trigonometric functions at the point 5 pi over 4?