# Ch 11: Trigonometry

Watch video lessons and learn about the different aspects of basic trigonometry at the beginner level. These video lessons are short and engaging and make learning easy!

## Trigonometry - Chapter Summary and Learning Objectives

This chapter focuses on some basic concepts of trigonometry. These beginner level lessons will introduce you to concepts like graphing the sine, cosine and tangent functions. You'll get to learn about the unit circle and shifts in graphs. We have lessons that will also cover right triangles and the relationship of right triangles to sine and cosine. Special right triangle properties will also be covered. Some of the specific concepts you'll learn in this chapter include:

• How the Law of Sines relates to right triangles
• The relationship between the Law of Cosine and the Pythagorean Theorem
• How to use the Double Angle Formula
• How to convert between radians and degrees
• How to solve trigonometric equations for x
• Basic trigonometry identities

VideoObjective
Graphing Sin/Cos & Transformations Learn to graph sine and cosine unit circle and explain shifts.
Graphing the Tangent Function: Amplitude, Period, Phase Shift & Vertical Shift Discover how to graph the tangent function and learn the concepts of amplitude, period, phase shift and vertical shift.
Unit Circle: Memorizing the First Quadrant Study the first quadrant of the unit circle.
Right Triangles Examine right triangles as they relate to sine and cosine.
Special Right Triangles (3-6-9, 45) Explore the common properties of special right triangles.
Law of Sines Find out how to use two angles and a side to define the entire triangle.
Law of Cosines Use the Law of Cosine and relate it to the Pythagorean Theorem.
Double Angle Formula Take a look at how to use the angle sum formula.
Converting Between Radians and Degrees Learn how to convert angles in radians to degrees and degrees to radians.
How to Solve Trigonometric Equations for x Practice solving trigonometric equations for x.
List of the Basic Trig Identities Explore the basic trigonometry identities.

12 Lessons in Chapter 11: 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

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