Trig Functions


This from the Onion,

and this from Scientific American .


Nice :)


Cute but I would not write home about it!!!

I was dabbling with DEFINING NEW TRIG FUNCTIONS recently, and I tell you that coming up with zinger functions IS NOT EASY!!!



How did our space program ever get going without them?! Idiotic.


Very idiotic!!!!


Yeah, but they have fun names! My favorite semi-obscure mathematics terms are 'subtrahend' and 'minuend'. I think everyone from my generation learned them in grade school in the USA but most promptly forgot them since they were never used again. I always thought that they would make excellent names for a pair of small dogs.

Edited: 14 Sept 2013, 9:10 p.m.


Obscure? I filled entire pages of subtrahend and minuend in my firsts grades, just to memorize those terms. Damn teacher.

Edited: 15 Sept 2013, 4:34 p.m. after one or more responses were posted


Here (in Brazil) we call them minuendo and subtraendo. I've just correctly guessed what the latter should be in Italian: sottraendo. This makes for a nice mnemonic. From Wikipedia:


Per fare una sottrazione in colonna bisogna prima scrivere il minuendo, e sotto, il sottraendo: 86 - 34 = 52


These were taught in first or second grade, I think. Good old days when memory was always fresh and neurons worked at full speed :-)


Well done Gerson, A+ or, as we were used here, 10+



Grazie, Massimo! :-)

Numeric grades are used here as well, but for a while we had alpha grades in high-school, which I disliked.


LOL. I loved the Onion article.


Some of those "new" trig functions were used by surveyors in the pre-computer days and may still be used by them from time to time. I was introduced to them when I took Surveying I & II in college. But, since I'm a civil engineer and I have a computer, I have no need for them any more.

Possibly Related Threads…
Thread Author Replies Views Last Post
  Trig vs hyperbolic handling differences in Prime CAS Michael de Estrada 3 1,573 11-08-2013, 06:26 PM
Last Post: Mark Hardman
  [41CL] New Extra Functions version Monte Dalrymple 0 1,107 11-08-2013, 04:32 PM
Last Post: Monte Dalrymple
  HP Prime: in need of help with defining functions Alberto Candel 14 4,330 10-27-2013, 10:48 AM
Last Post: Alberto Candel
  HP Prime spreadsheet functions SanS 0 1,903 10-04-2013, 04:23 AM
Last Post: SanS
  Stats functions on the HP34S Nicholas van Stigt 5 2,018 09-24-2013, 02:45 AM
Last Post: Nick_S
  50g piecewise functions Kurt Fankhauser 6 2,364 09-15-2013, 08:01 PM
Last Post: Kurt Fankhauser
  trig scales on the Post Versalog slide rule Al 12 3,689 09-15-2013, 06:01 AM
Last Post: John I.
  Missing functions on the HP Prime!!!??? :-( Namir 6 2,315 08-22-2013, 08:40 AM
Last Post: Gilles Carpentier
  HP41 Functions Address Table (F.A.T.) Antoine M. Couëtte 6 2,218 07-21-2013, 02:48 AM
Last Post: Antoine M. Couëtte
  Some trig help, please Matt Agajanian 33 7,281 04-12-2013, 06:39 PM
Last Post: Matt Agajanian

Forum Jump: