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# Trigonometry Help

In this section you'll find study materials for trigonometry help. Use the links below to find the area of trigonometry you're looking for help with. Each study guide comes complete with an explanation, example problems, and practice problems with solutions to help you learn trigonometry.

### Study Guides

showing 51 - 60 of 94
• 51.

#### The Global Grid Help

Great Circles All the trigonometry we’ve dealt with until now has been on flat surfaces, or in space where all the lines are straight. But in the real world—in particular, on the surface of the earth—lines are not always ...

Source: McGraw-Hill Professional
• 52.

#### Arcs and Triangles Help

Arcs Now we know how latitude and longitude are defined on the surface of the earth, and how to find the differences in latitude and longitude between points along north–south and east–west paths. Let’s look at the problem of ...

Source: McGraw-Hill Professional
• 53.

Global Navigation Spherical trigonometry, when done on the surface of the earth, is of practical use for mariners, aviators, aerospace engineers, and military people. It is the basis for determining great-circle distances and headings. Here ...

Source: McGraw-Hill Professional
• 54.

#### How is Trigonometry Used Practice Test

Practice quizzes for this test can be found at: Scientific Notation Practice ...

Source: McGraw-Hill Professional
• 55.

#### Introductory Trigonometry Practice Quiz

Introductory Trigonometry Practice Quiz The quiz is 50 multiple-choice questions covering the topics in this book. While 50 questions can't cover every concept, skill, or shortcut taught in this book, your performance on the pretest will give you a good indication ...

Source: LearningExpress, LLC
• 56.

#### Trigonometry and Angles Study Guide

Trigonometry and Angles In this lesson, we examine the concept of an angle. There are two ways to measure the size of an angle: with degrees or with radians. We study both, along with the ways to convert from one to the other. An ...

Source: LearningExpress, LLC
• 57.

#### Trigonometry and Triangles Study Guide

Trigonometry and Triangles This lesson examines triangles. We see why the angles of a triangle add up to 180° (or p radians). We also see how two triangles with the same three angles (similar triangles) will always be scaled or enlarged ...

Source: LearningExpress, LLC
• 58.

#### The Pythagorean Theorem Study Guide

The Pythagorean Theorem In this lesson, we examine a very powerful relationship between the three lengths of a right triangle. With this relationship, we will find the exact length of any side of a right triangle, provided we know the lengths of ...

Source: LearningExpress, LLC
• 59.

#### Trigonometry and Functions Study Guide

Trigonometry and Functions In this lesson, we study very important and useful mathematical objects called functions. If you plug a number into a function, out will come another number. This can be a handy way to relate pieces of information. We ...

Source: LearningExpress, LLC
• 60.

#### Trigonometry and Sine Study Guide

Trigonometry and Sine In this lesson, we introduce the sine function. We show how to evaluate the sine of an angle in a right triangle. Often, this is as easy as dividing the length of one side of the triangle by another. Sometimes we need to use ...

Source: LearningExpress, LLC

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