14 - Reference Angles Explained - Sine, Cosine & Unit Circle - Part 1
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YouTubeMath and Science
14 - Reference Angles Explained - Sine, Cosine & Unit Circle - Part 1
More Lessons: http://www.MathAndScience.com Twitter: https://twitter.com/JasonGibsonMath In this lesson, you will learn what a reference angle is and why they are important in trigonometry, precalculus, and calculus. A reference angle is the angle measure from the terminal ray of the angle to the x-axis. It is always a positive angle. The ...
73.7K viewsSep 8, 2020
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