# Beginning Trigonometry Topics?

Trigonometry started in the Arabic world and took its modern form using ratios for the functions in the 13th century. At first it was just used for triangles, but later Newton, Fourier and others f...
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http://www.ehow.com/info_8507750_beginning-trigonometry-topics.html

## How to Learn Trigonometry?

A unit circle used to illustrate various trig functions.Trigonometry is the branch of Mathematics that deals with studying triangles. It is very easy to understand if approached in the right manner...
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http://www.wikihow.com/Learn-Trigonometry

## Who is the father of trigonometry?

According to the San Francisco Unified School District, Nasir Al-Din Al-Tusi is considered the father of trigonometry. Al-Tusi lived from 1201 to 1274 AD and was also known as a noted medical schol...
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http://www.answerbag.com/q_view/2094872

## Relationships In Trigonometry?

Trigonometric functions are functions that relate an angle on a unit circle to its x and y coordinates. Unit circles are circles with radius 1 that are centered at the coordinates (0, 0). All six t...
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http://www.ehow.com/info_8495954_relationships-trigonometry.html

## How to Calculate Trigonometry Angles?

Trigonometry is the the study of triangles. This type of math is the basis of calculations involving geometry, harmonics and physics. In this field of math students are generally given a triangle w...
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http://www.ehow.com/how_8277192_calculate-trigonometry-angles.html