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Trigonometry is a book that covers most of the fundamental concepts taught in a Precalculus course. I walk the reader through these ideas conceptually, that the ideas might come to life. Think of this book as a tutor guiding you through the math, gently leading you to not only do the math, but to fully understand it.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.