Trigonometry: A Very Short Introduction (Very Short Introductions)
Trigonometry Books
One-Page Summaries for Algebra, Geometry, and Pre-Calculus
Trig Identities Practice Workbook with Answers
Trigonometry , Lessons and Solved Exercises: Trigonometry, Lessons and Solved Exercises, The Pythagorean theorem, cosine, sine, tangent of an acute angle, trigonometric calculation, , unit circle, curvilinear abscissas, trigonometric
The Mathematics of Boilermaking
Essential Trigonometry: A Self-Teaching Guide
The Magic of Math: Solving for x and Figuring Out Why
Polar Graph Paper: Circular Grid Notebook (150 pages, 5-15-30 degree angles with 1/8 inch radials)
