The sine, cosine and tangent of an angle are all defined in terms of trigonometry, but they can also be expressed as functions. In this unit we examine these functions and their graphs. We also see how to restrict the domain of each function in order to define an inverse function.

In order to master the techniques explained here it is vital that you undertake plenty of practice exercises so that they become second nature.

After reading this text, and/or viewing the video tutorial on this topic, you should be able to:

- specify the domain and the range of the three trigonometric functions f(x) = sin x, f(x) = cos x and f(x) = tan x,
- understand the difference between each function expressed in degrees and the corresponding function expressed in radians,
- express the periodicity of each function in either degrees or radians,
- specify a suitable restriction for the domain of each function so that an inverse function can be defined,
- find the appropriate value of x (in either degrees or radians) when given a value of sin x, cos x or tan x.

Contents

- Introduction
- The sine function f(x) = sin x
- The cosine function f(x) = cos x
- The tangent function f(x) = tan x

## Course, tutorial Summary Trigonometric functions

Course material to download for free on **Trigonometric functions** category Mathematics.

This course is intended for a strictly personal use, the file is of format pdf level
Beginner
, the size of this file is 176.8 KB.

The site also offers courses in **algebra, analysis, numerical analysis, probability, statistics, mathematics financial, mathematical computer** and many other tutorials.
You have to come and see our **Mathematics**. You will find your happiness without problem!

## List of courses

download course an Introduction to Trigonometric Functions, PDF textbook by Peggy Adamson and Jackie Nicholas - University of Sydney. - type of file pdf and size 480.44 KB, tutorial for level
Beginner
.

Download course basic Daria Eiteneer for high school level or beginners, a PDF guide by Daria Eiteneer. - type of file pdf and size 339.25 KB, tutorial for level
Beginner
.

Download course Trigonometric Functions - A guide for teachers, PDF file by Australian Mathematical Sciences Institute. - type of file pdf and size 879.24 KB, tutorial for level
Beginner
.

Download free PostgreSQL Functions By Example course material, tutorial training, a PDF file by Joe Conway. - type of file pdf and size 688.77 KB, tutorial for level
Beginner
.

Download free course Introduction to functions and plotting the graph of a function, PDF file by mathcentre.ac.uk. - type of file pdf and size 131.69 KB, tutorial for level
Beginner
.

Download Limits of functions for beginners with exercices, a PDF course by mathcentre. - type of file pdf and size 123.1 KB, tutorial for level
Beginner
.