The Complete Idiot's Guide to TrigonometryBook - 2012
Take the mystery out of trig!
Trigonometry . That word alone can make you want to skip the next semester. But trig doesn't have to be a struggle.
Loaded with plain-English explanations of the most challenging aspects of trig, plus numerous practice problems and their easy-to-follow solutions, this helpful guide is the next best thing to personal trigonometry tutor. In it, you get-A refresher on the geometry and algebra topics you need to know to provide a solid foundation upon which to build your trig knowledge. Easy tutorials on working with triangles, trigonometric functions, trigonometric ratios, and the law of sines and cosines. Lessons on unit circles, evaluating trigonometric functions jof any angle, and working with degree and radian angle measures. Guidance on working with graphs, their inverse, and their variations-shrinking, stretching, and shifting them along both axes. An in-depth look at trigonometric formulas, identities, and equations. Tips for mastering complex numbers and understanding polar coordinates.