Math Is Fun Forum
Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °
You are not logged in.
- Topics: Active | Unanswered
Pages: 1
#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:
Offline
#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. 
igloo myrtilles fourmis
Offline
Pages: 1