New angle makes trigonometry rational

Re: New angle makes trigonometry rational
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I'm working increasingly with graduate engineers from UNSW (btw, I went there, and spent a wonderful year annoying the ODdies)...it's very depressing to see the skills that they are leaving with. 
Re: New angle makes trigonometry rational
Sounds really like trig to me now
http://web.maths.unsw.edu.au.nyud.net:8090/~norman/papers/Chapter1.pdf 
Re: New angle makes trigonometry rational
I'm no math whiz, but it just seems like a "recalibration" to me  another way of doing the same thing.

Re: New angle makes trigonometry rational
freeman,
he uses pythagorus' theorem, but leaves out the square root (i.e. a calculation), and leaves the numbers as a squared. Then instead of angles, uses the ratios of opposites (or adjacents) divided by the hypotenuse to define how far apart they are. He's using trig, just using different terminology, and justifying it by simplicity. Most engineers and mathematicians would work his way anyway, solving a formula at the end, rather than approximating (through a calculation) each step. Anyway, the mason's used a compass to work out 30, 45, 60, and 90 degrees (they were so proud to teach us that in Grade 4), and as to Quote:

Re: New angle makes trigonometry rational
That's what I'm seeing too,Shannow.
...so what makes this "revolutionary"? :? 
Re: New angle makes trigonometry rational
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Re: New angle makes trigonometry rational
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