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STRAIGHT LINE Distance Formula The distance between the points
STRAIGHT LINE Distance Formula The distance between the points

Chapter 9 Geometry Vocabulary: Right angle Regular polygon
Chapter 9 Geometry Vocabulary: Right angle Regular polygon

Spelling List #29 Spelling Words: 1. fraction 2. numerator 3
Spelling List #29 Spelling Words: 1. fraction 2. numerator 3

(RT) What is it? - Emendo-Ex
(RT) What is it? - Emendo-Ex

... quadrance  distance spread  sin angle  The actual definitions of quadrance and spread in RT are independent of distance, angle, and their trigonometric functions and are based on finite arithmetic and algebra  Spread is a dimensionless number between 0 and 1. The spread between parallel li ...
Trisecting the equilateral triangle with rational trigonometry
Trisecting the equilateral triangle with rational trigonometry

Final Exam Review Topics
Final Exam Review Topics

Solving Quadratic Equations by Completing the Square
Solving Quadratic Equations by Completing the Square

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Rational trigonometry

Rational trigonometry is a proposed reformulation of metrical planar and solid geometries (which includes trigonometry) by Canadian mathematician Norman J. Wildberger, currently an associate professor of mathematics at the University of New South Wales. His ideas are set out in his 2005 book Divine Proportions: Rational Trigonometry to Universal Geometry. According to New Scientist, part of his motivation for an alternative to traditional trigonometry was to avoid some problems that occur when infinite series are used in mathematics. Rational trigonometry avoids direct use of transcendental functions like sine and cosine by substituting their squared equivalents. Wildberger draws inspiration from mathematicians predating Georg Cantor's infinite set-theory, like Gauss and Euclid, who he claims were far more wary of using infinite sets than modern mathematicians. To date, rational trigonometry is largely unmentioned in mainstream mathematical literature.
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