# Ch 5: Trigonometry Concepts

## Trigonometry Concepts - Chapter Summary

The trigonometric laws of sine and cosine are explained in this chapter, as well as trigonometric similarity and some of the basic trigonometry identities. The trig values associated with some special angles and the properties of inverse functions are also introduced.

Your study continues with the history of the Pythagorean Theorem and its applications in trigonometry. After you have reviewed this chapter, you should be able to:

• Understand an easy trick called SohCahToa to help you solve trigonometry problems
• Define the origins of trigonometric ratios
• Identify the main trigonometry function that has relationships with all the other ones
• List the six trigonometric functions
• Explain the origins of the Pythagorean Theorem
• Solve real-life problems using the laws of sine and cosine

Use these lesson quizzes and chapter tests to measure how well you understand the subject matter. Our study materials are designed by professional instructors for an easy, interesting learning experience. You can access the lessons and quizzes at any time, day or night, seven days a week. If you have questions as you explore the chapter, contact our instructors for more help.

8 Lessons in Chapter 5: Trigonometry Concepts
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.
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Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
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