Trigonometry Redefined without Sines And Cosines 966
Spy der Mann writes "Dr. Norman Wildberger, of the South Wales University, has redefined trigonometry without the use of sines, cosines, or tangents. In his book about Rational Trigonometry (sample PDF chapter), he explains that by replacing distance and angles with new concepts: quadrance, and spread, one can express trigonometric problems with simple algebra and fractional numbers. Is this the beginning of a new era for math?"
No sines and cosines? (Score:5, Funny)
Now ... (Score:3, Funny)
The method doesn't matter, as long as the answer (Score:3, Funny)
Figures. (Score:5, Funny)
anybody remember the chant: SOH CAH TOA (Score:1, Funny)
(and now, thirty years later I still remember)
Sine = Opposite over Hypotenuse (SOH)
Cosine = Adjacent over Hypotenuse (CAH)
Tangent = Opposite over Adjacent (TOA)
(when dealing with right-angle triangles)
TDz.
Re:New meanings from now on.. (Score:1, Funny)
Re:Why are there 360 degrees? (Score:3, Funny)
Bah!! (Score:3, Funny)
Re:Don't worry... (Score:3, Funny)
Re:No sines and cosines? (Score:3, Funny)
Rumour has it that one year a freshman ran out of time on a trig exam, stuck on the first question, trying to write out the square root of two..
Re:No sines and cosines? (Score:5, Funny)
Re:UNSW .. not South Wales (Score:2, Funny)
Re:No sines and cosines? (Score:5, Funny)
Re:No sines and cosines? (Score:1, Funny)
Re:No sines and cosines? (Score:5, Funny)
But if you graduate at Dr. Wilberger's group... (Score:3, Funny)
Bert
Re:No sines and cosines? (Score:2, Funny)
Re:No sines and cosines? (Score:5, Funny)
Re:No sines and cosines? (Score:1, Funny)
Re:Now ... (Score:2, Funny)
I have a truly marvelous demonstration of this proposition which this margin is too small to contain.
Re:No sines and cosines? (Score:3, Funny)
Re:Now ... (Score:1, Funny)
Re:Distance-squared and dx/ds, dy/ds (Score:2, Funny)
Sex On Hard Concrete Always Hurts, Try Other Arrangements.
That's how my maths teacher said to remember it.
It worked really well for some reason...