| Sine and Other Trigonometric Functions |
Interactive tests and exercises.
http://answermath.com/sin.htm
A brief overview of trigonometric terms and concepts.
http://library.thinkquest.org/10030/trigcon.htm
Cosine, sine and tangent are defined. The Pythagorean theorem is illustrated as well the number of degrees in a many sided figure.
http://abe.www.ecn.purdue.edu/~agen215/trig.html
| 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.
http://www.pitt.edu/~wek3/sineadd/index.html
Introduction to trigonometry. Includes links to trig-based animations and definitions.
http://fergusmurray.members.beeb.net/trig.htm
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