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YouTubeProfRobBob
Setting up the Unit Circle Part 1 and Reference Angle
In a 2 part video I introduce the basic functions of Trigonometry (Sine, Cosine, and Tangent) and explain how to develop the unit circle using 45-45-90 triangle and 30-60-90 triangles you learned in Geometry. I also define reference angles. Subscriber Tip: All S(in)tudents T(an)ake C(os)alculus (thanks Steve:) Setting Up the Unit Circle Part 2 ...
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Unit Circle Trigonometry
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Jump to key moments of Setting Up the Unit Circle

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