Trigonometry resources here.
10 cm Circle (make sure, when printing, to print full size) http://www.mathedpage.org/circle/circles/10cm-circle.pdf
Trigonometry: A Clever Study Guide is a book by James Tanton James Tanton (a very interesting mathematician interested in HS student understanding): Twitter: https://twitter.com/jamestanton http://gdaymath.com/ http://www.jamestanton.com/ MAA: http://www.maa.org/math-competitions/teachers/curriculum-inspirations YouTube: example (tetrahedron problem) 😉 James Tanton (PhD. Mathematics, Princeton University, 1994) is a research mathematician deeply interested in bridging the gap between the mathematics experienced by …
Rolling a Unit Circle Here’s a nice GeoGebra to see and think about radians. Rolling a unit circle. (https://ggbm.at/r6Ke6KjC) Save Save
Page for Miscellaneous Trigonometry Information Webpage How do you find exact values for the sine of all angles? (some via straightforward methods such as the sum, difference, and half-angle formulas — some by more obscure means)