# Ch 15: Principles of Trigonometry

This entertaining chapter makes it easy to prepare for a test that covers the principles of trigonometry. Utilize short lessons, mini quizzes and other study resources, available in a secure online environment to quickly strengthen your knowledge of important concepts.

## Principles of Trigonometry - Chapter Summary

Get a quick refresher of the principles of trigonometry from home or on-the-go with help from this chapter. Enjoy access to online lessons that offer in-depth analyses of sines, cosines, inverse trigonometric functions and more. Our instructors make the lessons easy to understand, ensuring you have the knowledge to do the following:

• Use trigonometry and the Pythagorean theorem to solve right triangles
• Define and discuss the application of the laws of sines and cosines
• Share the definition and examples of trigonometric functions
• Determine trigonometric identify using graphs
• List and describe the properties of inverse trigonometric functions
• Recognize and model periodic functions

The resources in this chapter make your study of the principles of trigonometry fun and convenient. Lessons are engaging and informative and are accompanied by multiple-choice quizzes you can take any time to ensure you comprehend key concepts. If you need to clarify or expand your understanding of specific topics, don't hesitate to submit your questions to our subject-matter experts. To confirm your overall knowledge of this chapter, be sure to take our practice exam.

7 Lessons in Chapter 15: Principles of Trigonometry
Test your knowledge with a 30-question chapter practice test
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

### Earning College Credit

Did you know… We have over 200 college courses that prepare you to earn credit by exam that is accepted by over 1,500 colleges and universities. You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam regardless of age or education level.