Real, and irrational...: Trigonometry Unit Circle Fun - Made4Math!
Precalculus for dummies cheat sheet
Hand trick to help high school students remember the unit circle - works for left or right-handed students.
Blank Unit Circle
Full explanation Hand unit circle - I might mirror it on my right hand instead so that my cosine is on the left and sine is on the right.
Math = Love: Unit 3: Trig Ratios and the Unit Circle INB Pages
Calculus for Beginners and Artists is an online textbook that provides an overview of Calculus in clear, easy to understand language designed for the non-mathematician. Thank you MIT OpenCourseWare for awesome, free resources and classes!!!
I taught the Unit Circle in half the time with twice the retention with this trick! Great supplement to teaching the special triangles! http://geometrycoach.com/the-unit-circle-hand-trick/
A useful way to remember sin(30), sin(45), sin(60): think "1, 2, 3"; cos(30), cos(45), cos(60): think "3, 2, 1" | www.mathisfun.com
cheesemonkey wonders: Life on the Unit Circle - Board Game for Trig Functions