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Ch 9: Geometry and Trigonometry: Homework Help

About This Chapter

The geometry and trigonometry chapter of this Precalculus Homework Help course helps students complete their geometry and trigonometry homework and earn better grades. This homework help resource uses simple and fun videos that are about five minutes long.

How it works:

  • Identify which concepts are covered on your geometry and trigonometry homework.
  • Find videos on those topics within this chapter.
  • Watch fun videos, pausing and reviewing as needed.
  • Complete sample problems and get instant feedback.
  • Finish your geometry and trigonometry homework with ease!

Topics from your homework you'll be able to complete:

  • Using a graphical approach to visualizing geometry problems
  • Calculating the volumes of basic shapes
  • Finding distance with the Pythagorean Theorem
  • Using sine and cosine in trigonometry
  • Understanding how the Pythagorean Theorem is used in trigonometry

7 Lessons in Chapter 9: Geometry and Trigonometry: Homework Help
Test your knowledge with a 30-question chapter practice test
How to Solve Visualizing Geometry Problems

1. How to Solve Visualizing Geometry Problems

A picture is worth a thousand words, but sometimes drawing that picture can be like doing origami with your eyes closed. Practice translating complex problems into simple, meaningful images in this lesson.

How to Calculate the Volumes of Basic Shapes

2. How to Calculate the Volumes of Basic Shapes

Squares pegs = square holes. Triangular pegs = triangular holes. But where does a sphere go? In this lesson, review volumes of common shapes while contrasting a sphere and a cylinder - after all, they both go into the circular hole... right?

Finding Distance with the Pythagorean Theorem

3. Finding Distance with the Pythagorean Theorem

How much faster is it to cut the corners in a race around the block? In this lesson, review the Pythagorean Theorem, and figure out how to solve without a right triangle.

Trigonometry: Sine and Cosine

4. Trigonometry: Sine and Cosine

Learn an easy trick to help you solve trigonometry problems, including problems with sine, cosine and inverse trig functions. At the end of this lesson, you'll know what SohCahToa means and how to use it.

Trigonometry and the Pythagorean Theorem

5. Trigonometry and the Pythagorean Theorem

Explore how the Pythagorean Theorem can be used in conjunction with trigonometric functions. In this lesson, take an inverse trigonometric function, and define all three sides of a right triangle.

Semicircle: Definition, Perimeter & Area Formulas

6. Semicircle: Definition, Perimeter & Area Formulas

In this lesson, you'll discover what a semicircle is. You'll also discover the formulas for perimeter and area that will work on every semicircle. Then, test your knowledge by taking a brief quiz.

Angle Pairs: Types & Concept

7. Angle Pairs: Types & Concept

There are five major types of angle pairs in geometry. In this lesson, you'll explore the different types of angles and learn the rules of measuring those angles. When you finish the lesson, test your knowledge with a short quiz.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

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