# Chapter 7: Periodic Functions

- Page ID
- 34023

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In this chapter, we will investigate graphs of sine, cosine, and other trigonometric functions.

- Section 7.1: Prelude to Periodic Functions
- Each day, the sun rises in an easterly direction, approaches some maximum height relative to the celestial equator, and sets in a westerly direction. The pattern of the sun’s motion throughout the course of a year is a periodic function. Creating a visual representation of a periodic function in the form of a graph can help us analyze the properties of the function.

- 7.2: Graphs of the Sine and Cosine Functions
- In the chapter on Trigonometric Functions, we examined trigonometric functions such as the sine function. In this section, we will interpret and create graphs of sine and cosine functions

- 7.3: Graphs of the Other Trigonometric Functions
- This section addresses the graphing of the Tangent, Cosecant, Secant, and Cotangent curves.

- 7.4: Inverse Trigonometric Functions
- In this section, we will explore the inverse trigonometric functions. Inverse trigonometric functions “undoes” what the original trigonometric function “does,” as is the case with any other function and its inverse. In other words, the domain of the inverse function is the range of the original function, and vice versa.

## Contributors

Jay Abramson (Arizona State University) with contributing authors. Textbook content produced by OpenStax College is licensed under a Creative Commons Attribution License 4.0 license. Download for free at https://openstax.org/details/books/precalculus.