Library > Math > Trigonometry

Trigonometry (2)

19 & Under

Trigonometric Functions

2000
Our web site, accessible in both Polish and English, introduces the user to four basic trigonometric functions: sine, cosine, tangent, and cotangent. Each function is defined in the context of a right triangle and a coordinate system, with diagrams for each. Graphs of each function are also shown, and reduction formulas are given. Information pertaining to the functions as a whole include: mathematical relationships between the functions, an overview of reduction formulas, and basic trigonometric formulas. Finally two sample problems are provided to test what the user has learned.
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Trigonometric Identities--A Clever Way to Prove

1998
This is a great trigonometry tutorial, put together by a team of young mathematicians. A nice help section explains the site's navigation controls. Much of the text can also be heard since an audio player option is provided. All the necessary formulas and equations that you should know in order to master trigonometry are explained. The extensively used bulletin board allows visitors to pose trig questions and get help when they're stuck.
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