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 https://www.youtube.com/watch?v=FaZ7frx8nd8&src_vid=j5SoWzBSUmY&feature=iv&annotation_id=annotation_344584 Check out http://www.ProfRobBob.com, there you will find my lessons organized by class/subject and then by topics within each class. Find free review test, useful notes and more at http://www.mathplane.com If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage www.YouTube.com/Profrobbob