Unit Circle Trigonometry Cheat Sheet with hand trick memorizing details.
This is my version of the unit circle on steroids. I have tweaked it over 10 years and finally created the perfect teaching tool to fit on one page!
I have included a symbolic key for the range of inverse functions, alongs with information on Tangent and reciprocal identities.
Color coding emphasizes the special right triangle ratios. I have purposely placed the tangent values only in the first quadrant to emphasize the ratios.
Two versions of the unit circle are included, one with and without hand trick notes.
A separate page contains detailed notes on the hand trick that I like to use for memorizing the unit circle trigonometry facts. This trick is especially valuable for students who have a difficult time committing the trig facts to memory even after drawing countless number of special right triangles.
I like to place this sheet in a page protector to use as a dry erase tool. This is quite helpful when learning about coterminal and reference angles. I also stress the fact that a unit circle has a radius of one, so that quadrantal angles values are easily memorized.
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