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Trigonometry For Dummies, 3rd Edition
book

Trigonometry For Dummies, 3rd Edition

by Mary Jane Sterling
March 2023
Beginner content levelBeginner
400 pages
9h 38m
English
For Dummies
Content preview from Trigonometry For Dummies, 3rd Edition

Chapter 18

Graphing Sine and Cosine

IN THIS CHAPTER

Bullet Looking at the basic graphs of sine and cosine

Bullet Working with variations of the graphs

Bullet Using sine and cosine curves to make predictions

The graphs of the sine and cosine functions are very similar. If you look at them without a coordinate axis for reference, you can’t tell them apart. They keep repeating the same values over and over — and the values, or outputs, are the same for the two functions. These two graphs are the most recognizable and useful for modeling real-life situations. The sine and cosine curves can represent anything tied to seasons — the weather, shopping, hunting, and daylight. The equations and graphs of the curves are helpful in describing what happens during those seasons. You also find the curves used in predator-prey scenarios and physical cycles.

The ABCs of Graphing

You can graph trig functions in a snap — well, maybe not that fast — but you can do it quickly and efficiently with just a few pointers. If you set up the axes properly and have a general understanding of the different functions’ shapes, then you’re in business.

Different kinds of values represent the two axes in trig graphs. The x-axis is ...

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Publisher Resources

ISBN: 9781394168552Purchase Link