Book description
A plain-English guide to the basics of trig
Trigonometry deals with the relationship between the sides and angles of triangles... mostly right triangles. In practical use, trigonometry is a friend to astronomers who use triangulation to measure the distance between stars. Trig also has applications in fields as broad as financial analysis, music theory, biology, medical imaging, cryptology, game development, and seismology.
From sines and cosines to logarithms, conic sections, and polynomials, this friendly guide takes the torture out of trigonometry, explaining basic concepts in plain English and offering lots of easy-to-grasp example problems. It also explains the "why" of trigonometry, using real-world examples that illustrate the value of trigonometry in a variety of careers.
Tracks to a typical Trigonometry course at the high school or college level
Packed with example trig problems
From the author of Trigonometry Workbook For Dummies
Trigonometry For Dummies is for any student who needs an introduction to, or better understanding of, high-school to college-level trigonometry.
Table of contents
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- Introduction
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Part I: Getting Started with Trigonometry
- Chapter 1: Trouncing Trig Technicalities
- Chapter 2: Coordinating Your Efforts with Cartesian Coordinates
- Chapter 3: Functioning Well
- Chapter 4: Getting Your Degree
- Chapter 5: Dishing Out the Pi: Radians
- Chapter 6: Getting It Right with Triangles
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Part II: Trigonometric Functions
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Chapter 7: Doing Right by Trig Functions
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SohCahToa to the Rescue: How Trig Functions Work
- The name game: A right triangle's three sides
- The six ratios: Relating the three sides
- The sine function: Opposite over hypotenuse
- The cosine function: Adjacent over hypotenuse
- The tangent function: Opposite over adjacent
- All together, now: Using one function to solve for another
- Similar right triangles within a right triangle
- Socking the rules away: The legend of SohCahToa
- Taking It a Step Further: Reciprocal Functions
- Angling In on Your Favorites
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SohCahToa to the Rescue: How Trig Functions Work
- Chapter 8: Trading Triangles for Circles: Circular Functions
- Chapter 9: Defining Trig Functions Globally
- Chapter 10: Applying Yourself to Trig Functions
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Chapter 7: Doing Right by Trig Functions
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Part III: Identities
- Chapter 11: Identifying Basic Identities
- Chapter 12: Operating on Identities
- Chapter 13: Proving Identities: The Basics
- Chapter 14: Sleuthing Out Identity Solutions
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Part IV: Equations and Applications
- Chapter 15: Investigating Inverse Trig Functions
- Chapter 16: Making Inverse Trig Work for You
- Chapter 17: Solving Trig Equations
- Chapter 18: Obeying the Laws
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Part V: The Graphs of Trig Functions
- Chapter 19: Graphing Sine and Cosine
- Chapter 20: Graphing Tangent and Cotangent
- Chapter 21: Graphing Other Trig Functions
- Chapter 22: Topping Off Trig Graphs
- Part VI: The Part of Tens
- Appendix: Trig Functions Table
- About the Author
- Cheat Sheet
- More Dummies Products
Product information
- Title: Trigonometry For Dummies, 2nd Edition
- Author(s):
- Release date: February 2014
- Publisher(s): For Dummies
- ISBN: 9781118827413
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