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Topic: Trigonometry challenge
Replies: 10   Last Post: Aug 9, 2006 1:20 AM

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Norman Wildberger

Posts: 33
Registered: 9/2/05
Trigonometry challenge
Posted: Nov 25, 2005 7:45 PM
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I have posted at my personal web page http://web.maths.unsw.edu.au/~norman/Rational1.htm
some short pdf papers that might interest teachers of trigonometry. One is called `The Wrong Trigonometry', one is `A Rational Approach to Trigonometry', and another is `Survivor: The Trigonometry Challenge'.

These short papers, meant for a high school audience, discuss a simpler form of trigonometry that students can learn in a fraction of the time required for the usual trig. The idea is to work exclusively with ratios, hence the name `Rational Trigonometry'. There are five main laws that replace the usual cosine , sine laws etc, and calculators/tables turn out not to be needed (although they are still helpful). I would be interested in examples of standard trig problems that people think might not be solvable with this new methodology.

Regards, N Wildberger



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