Trigonometry Part 3 - Unit Circle Angles (Degree & Radian)
The unit circle is a very useful tool to help us understand and remember trigonometry principles. We use it here to help us recognize the importance of angles. We are all familiar with angles defined in degrees. Why do we need to complicate things by introducing "radians"? We'll explain why they are useful here - and as we go through this series you will see why they're more convienent in certain scenarios.