Evaluate Sine given an angle where the terminal side is on the y axis

The video tutorial explains the concept of circles using Pi, focusing on coterminal angles and their properties. It emphasizes the redundancy of extra circles in calculations and simplifies the process by eliminating them. The tutorial also covers identifying coordinate points and sine values, providing a comprehensive understanding of these mathematical concepts.

Why is it unnecessary to go around the circle multiple times when calculating angles?

What does the coordinate point (0, -1) represent on the unit circle?