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# Trigonometry

To define the trigonometric functions for the angle A, start with any right triangle that contains the angle A.

Trigonometry is described in multiple online sources, as addition to our editors' articles, see section below for printable documents, Trigonometry books and related discussion.

## Suggested Pdf Resources

Trig Cheat Sheet ( ) ( ) ( ) ( ) ( ) ( ) ( ),x y
2005 Paul Dawkins. Trig Cheat Sheet. Definition of the Trig Functions.
TRIGONOMETRY
Trigonometry - Wikimedia
Trigonometry. Edition 1.0 7th March 2006.
COMPASS/ESL
College Algebra, Geometry, and Trigonometry Placement Tests.
Trigonometry Unit - SBCTC Internet Server Information

## Suggested News Resources

Freddie Highmore is all grown up as a rebel without his homework
This lad's big act of anti-authoritarianism is that he can't be bothered to hand in his trigonometry prep. That may strike you as hardly the last word in gripping drama. True, a few other things are going wrong in his life.
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Complex Trigonometry and Let's Compose! A Musical About Kobe Bryant's Lunch, but its problems run much deeper than that. Mainly, it's just not very fun.
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In high school I discovered trigonometry and spent many hours calculating the heights of things, using right angles and fancy equations.
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He taught math - algebra, geometry and trigonometry - to technical engineering students at the Milwaukee Area Technical College. He helped other local students with a high school equivalency program.

## Suggested Web Resources

Trigonometry - Wikipedia, the free encyclopedia
Dave's short course in trigonometry
S.O.S. Math - Trigonometry
Covers measuring degrees, equations, and formulas. Includes illustrations and related links.
Math.com Homework Help Trigonometry
Free math lessons and math homework help from basic math to algebra, geometry and beyond.
Trigonometry -- from Wolfram MathWorld
Aug 29, 2011 The trigonometric functions are most simply defined using the unit circle.

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