April 2019
Beginner
368 pages
9h 38m
English
Content preview from Pre-Calculus Workbook For Dummies, 3rd Edition
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Part 3
Digging into Advanced Trig: Identities, Theorems, and Applications
IN THIS PART …
The concepts of trig keep building, and this material is to help you follow along. These chapters move into identities — they’re like formulas, but they’re true all the time, no matter what you put in for the variable(s). These identities are used to simplify expressions and solve equations, and they’re even used in trig proofs (and you thought you were done with proofs in geometry!). This part also includes some very specific and powerful identities that can be used to solve oblique triangles.
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