How to Graph an Angle in Terms of PI

The video tutorial explains how to determine if the cosine of an angle is positive or negative using the unit circle. It covers graphing the angle 7π/8, understanding π in terms of eighths, and identifying the terminal side of the angle. The tutorial concludes by determining the sign of the X coordinate in the second quadrant, emphasizing that it is negative.

What is the relationship between the cosine of an angle and the unit circle?

How can you represent 7π/8 in terms of eighths of a full circle?

Explain how to determine if a point on the unit circle is positive or negative.

What does it mean for an angle to be in the second quadrant in terms of its cosine value?

Describe the process of graphing angles in standard position.