SparkNotes: Precalculus: Trigonometric Functions: Trigonometric Functions
I don't ever plan on teaching high school math, but you never know. This looks helpful.. maybe for friends still in college.
Architecture: Law of Sines and Law of Cosines -- Why use them? - YouTube
Precalculus Reference Sheet More
Unit Circle Interactive Notebook Page Idea
The Precalculus Photo Project / Trig Functions
SPSU Math 1113 Precalculus Cheat Sheet - PDF - PDF
The Secondary Classroom can be fun too.....: Conic Guided Notes
Classifying Conics Interactive Notebook Page
FREEBIE for Algebra 2 Honors or PreCalculus Honors students. There are two fun mazes to challenge your learners, one for common logarithms and one for natural logarithms.