# Ch 8: Functions for Trigonometry

Watch online video lessons and learn about functions in trigonometry and how to use, write and graph them. Take the brief quizzes that follow each lesson to gauge your progress.

## Functions for Trigonometry- Chapter Summary and Learning Objectives

In these lessons, we'll learn what functions are in trigonometry and how to use them. Several lessons cover piecewise functions as well as transformations. This chapter also includes some practice problems in function identification and notation, giving you a change to check what you've studied. By the conclusion of this chapter, you should have a solid understanding of:

• Function notation and when it can be used
• Definition of power function and radical function
• Finding the domain of piecewise functions
• Working with transformations

Video Objective
What is a Function? Basics and Key Terms In this lesson, you'll learn the vocabulary needed to work with functions as well as get some information on function notation.
Functions: Identification, Notation and Practice Problems Here, we'll look at how to identify a function as well as use function notation. Practice problems are included, too.
What is Domain and Range in a Function? We'll discuss the meaning of the terms 'domain' and 'range' and examine what values can't be used in a function.
What is a Power Function? - Definition, Equations, Graphs and Examples You can find out what a power function is as well as discover how to write and graph their equations.
What is a Radical Function? - Definition, Equations and Graphs In this lesson, we'll look at how to graph square root and cube root functions.
Discontinuities in Functions and Graphs We'll look at discontinuities seen in graphs, especially point, jump and asymptotic discontinuities.
How to Graph Piecewise Functions Here, we'll examine the process of graphing a piecewise function, which is different from a regular function.
How to Find the Domain of Piecewise Functions Continuing with our work in piecewise functions, we'll see the process for determining their domain.
Transformations: How to Shift Graphs on a Plane This lesson covers the definition of transformations and how they can be moved on a graph.

9 Lessons in Chapter 8: Functions for 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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