[FrontPage Include Component]


Study Topics

Are you aware of every sub-discipline in the category of mathematics? Perhaps not.


You might discover something very exciting that you didn't know existed!


In ancient times, trigonometry (the study of angles) was one of many sub-topics in Euclidian-style synthetic geometry.  Developments in science and technology—notably astronomy, navigation, and surveying -- raised the study of triangles into a realm of its own where it could be studied and applied with the powerful analytical tools of algebra.


Although you can find courses and textbooks called "Trigonometry," the subject is often included in courses and textbooks called "Pre-Calculus."


The Unit Circle: Sine and Cosine Functions

Periodic Functions

Trigonometric Identities and Equations

Further Applications of Trigonometry

Note: Some of these tutorials might require a PDF reader. If you do not have an the Adobe Acrobat Reader installed on your device, you can download a free copy here. Many also require the Google Play app for mobile devices.

Trigonometric Functions (1)

Trigonometric Functions (2)

Radian Measure and Dynamic Trigonometry

Introduction to Trigonometry
A series of 53 video tutorials by Derek Owens.


Your Proof of

More Math at Free-Ed.Net

General Mathematics

Arithmetic and Basic Math



College Algebra




Differential Equations

Statistics and Probability

Linear Algebra

David L. Heiserman, Editor

Copyright ©  SweetHaven Publishing Services
All Rights Reserved

Revised: June 06, 2015