Trigonometry is a branch of mathematics which treats of the relations between the sides and angles of triangles.

This site intends to teach you the basics of Trigonometry. These are the following sections that you will be taught: Definition of Logarithms, and The "change-of-base" formula of Logarithms.

To begin your lessons just click on the section you want in the index and read through the text, examples, and online programs that are offered for your enjoyment.