Ch 9: Trigonometric Ratios

Get ready for an important exam or a homework assignment with this engaging chapter on trigonometric ratios. Our mobile-friendly video and text lessons allow you to work at your own pace as you're learning all the subjects you need to get the best score possible.

Trigonometric Ratios - Chapter Summary

In this informative chapter, our professional instructors present trigonometric ratios. Our lessons cover the sine and cosine functions in trigonometry, as well as the equations associated with circular functions. Other topics covered in this fun chapter include using compass bearings to solve real world problems and relating right triangles to cosine and sine using unit circles. You'll also review how to apply the difference and sum identities. This chapter is designed to help you:

• Use angles of elevation and depression to solve problems
• Find the area of a triangle using sine
• Understand the formula associated with half angle
• Explain the basic trigonometric identities

Our short video and text lessons cover all the important topics you need to know to get caught up in class or study for a test. If you have questions as you work through the chapter, you're welcome to reach out to one of our instructors. It's easy to go back or jump forward to a specific section of a video lesson using the video tabs feature. You can access these tools 24 hours a day on your mobile device or computer for fast, convenient studying.

9 Lessons in Chapter 9: Trigonometric Ratios
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

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