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Covers basic definitions and concepts in beginning trigonometry.
aleph0.clarku.edu
Activities in Math: Trigonometry
Three comprehensive modules from Syvum. Each includes theory and explanation, along with practice exercises.
www.syvum.com
An Index of Trigonometry Help Pages
Provides detailed discussion of trigonometry concepts. Includes examples of varying difficulty.
www.hyper-ad.com
Cosine, sine and tangent are defined. The Pythagorean theorem is illustrated as well the number of degrees in a many sided figure.
abe.www.ecn.purdue.edu
Covers measuring degrees, equations, and formulas. Includes illustrations and related links.
www.sosmath.com
Sine and Other Trigonometric Functions
Interactive tests and exercises.
answermath.com
Includes information on the laws of sines and cosines, right triangle trigonometry, and the ambiguous case.
geocities.com
An Introduction to Trigonometry
Definitions, basics, functions, and other concepts necessary to understand basic trigonometry.
www.ping.be
Addition Formulas for Sines and Cosines
Describes how the Sine and Cosine Addition Formulas can be derived by using vectors and how these formulas can be remembered relatively easily.
www.pitt.edu
Marlene's Trigonometry Calculator
Learn the basics, the solutions, and how to convert from degrees to radians.
www.marlenesite.com
Introduction to trigonometry. Includes links to trig-based animations and definitions.
oolong.co.uk