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I've been reading about Wildberger's rational trigonometry and I'm willing to learn it. I'm wondering if it's usage is accepted in undergraduate mathematics courses. It seems there's a redefinition on some concepts of trigonometry which may impact some expected results. So, is it currently accepted in mathematics undergraduate courses or it's still only a proposal with some benefit?

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It is just the same thing but making emphasis in getting formulas written in terms of that quadrance and spread. Of course, it is fine. The only problem is that it will be your task to translate back and forth for the people asking you about distance and angles and giving you data about distances and angles. –  ABC Jul 17 '13 at 4:03
    
Based on the little I know of rational trigonometry you would have a hard time communicating with others. However learning "alternative" an formulation might give you a different perspective which might be good. At the end of the day make sure you take a standard trig course since there is a lot of value in the traditional approach. –  Spencer Jul 17 '13 at 4:03
    
@RGB I'm curious, in rational trigonometry do students study sine and cosine waves? It seems like a difficult concept to study if the concept of an angle is replaced with spread. –  Spencer Jul 17 '13 at 4:05
    
Sine is just the square root of the spread. It is just a different language. You just need to translate. –  ABC Jul 17 '13 at 4:07
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@Spencer Look here. –  Igäria Mnagarka Jul 17 '13 at 4:09
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