Dave's Short Course in Trigonometry
by David E. Joyce
Publisher: Clark University 2002
This website is a short introduction to Trigonometry by a professor at Clark University. It is very easy to follow, is full of animations and study problems for the reader to work through. These notes are more of an introduction and guide than a full course. You should already be familiar with algebra and geometry before learning trigonometry. From algebra, you should be comfortable with manipulating algebraic expressions and solving equations. From geometry, you should know about similar triangles, the Pythagorean theorem, and a few other things, but not a great deal.
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by Michael Corral - mecmath.net
A text on elementary trigonometry. Though designed for college students, it could also be used in high schools. The traditional topics are covered, but a more geometrical approach is taken than usual. Also, some numerical methods are discussed.
by Hugh Blackburn - Macmillan and co
Trigonometry is the science of the numerical relations between the sides and angles of triangles. This treatise is intended to demonstrate how from given values of some of the sides and angles of a triangle to calculate all the others.
by Elmer A. Lyman, Edwin C. Goddard - Allyn and Bacon
A trigonometry textbook that treats the solution of triangles quite fully and elaborates analytical trigonometry. It covers angles, trigonometric functions, inverse functions, trigonometric equations and identities, triangles, spherical trigonometry.
by Carl Stitz, Jeff Zeager - Stitz Zeager Open Source Mathematics
Dr. Stitz and Dr. Zeager co-wrote this high-quality textbook that is within reach and accessible to the average college student. A quick glance at the table of contents shows that all the major topics of a college trigonometry course are included.