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#1 2008-04-18 19:29:19

Identity
Member
Registered: 2007-04-18
Posts: 934

Rational Trigonometry!

Forget about sines and cosines and tangents, forget about distance and forget about angles. This series of videos takes you back to oldschool geometry, where ratios and squares allow you to complete trigonometry problems without the messy decimal places.

What do you people think? I thought it was fascinating:


http://www.youtube.com/watch?v=ZYWHfvij94U

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#2 2008-04-19 10:06:55

John E. Franklin
Member
Registered: 2005-08-29
Posts: 3,588

Re: Rational Trigonometry!

He uses a right triangle for "spread", but if you put two back to back,
you get an isosceles triangle which is easier for most people to
deal with I think. 
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igloo myrtilles fourmis

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