TheMathPage provides comprehensive explanations, problems and solutions on all aspects of trigonometry. Topics include ratio and proportion, the trigonometric functions of the various kinds of triangles, the laws of sines and cosines, circles and arcs, line values, graphs of trigonometric…
This Trig Cheat Sheet is a pdf reference outlining the most important points of trigonometric functions. It includes diagrams and definitions of trig functions, facts and properties, formulas and identities, a unit circle, inverse trig functions, and laws of sines,…
From site: Algebra 2/Trigonometry Resources are a collection of free resources for students studying and/or reviewing a second course in high school algebra and/or trigonometry.
From site: This page is devoted to the learning of Trigonometry I (basic trigonometry). It is part of the Secondary 4 (Grade 10) math curriculum where I teach, but this material is required knowledge in secondary school Math no matter where you study.