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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 2

Cooperating with Cartesian Coordinates

IN THIS CHAPTER

Bullet Marking points on a graph

Bullet Finding the distance between two points

Bullet Locating midpoints

Bullet Defining the slope of a line

Bullet Determining equations of circles

A picture is worth a thousand words. Drawing pictures or graphs of functions and equations in math helps you understand what’s going on with them. In trigonometry, you often draw angles and triangles, in addition to the curves that represent the trig functions (sine, cosine, tangent, cotangent, secant, and cosecant). The standard Cartesian coordinate system, which you use when drawing graphs in algebra and other math topics, works best here. If you’re looking for a refresher on this point-plotting system, you will find it in this chapter. In short, with the Cartesian coordinate system, everything reads from left to right and from bottom to top, running through the negative to the positive numbers.

Starting Out Simple: Plotting Points

Plotting points on a mathematical graph ...

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Publisher Resources

ISBN: 9781394168552Purchase Link