Cotangent, Secant, Cosecant?!!

Jun 24, 2009 00:30

Has anyone run into the Cotangent or Secant or Cosecant functions since learning them in High School? Does anyone use them for anything? I do seem to remember a few mentions from calculus that fussed about secants, but why do we have special names for these things ( Read more... )

mathematics, request, teaching & studenting

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unbeliever64 June 25 2009, 21:18:24 UTC
You know, I learned Sine, Cosine and Tangent early on... but I never had *ANY* instructor mention Secant or Cosecant (and I minored in Math).

If it's of any help/interest, my favorite Trig mnemonic was "Soak a Toe", i.e. SOH CAH TOA, meaning:

Sine=Opposite/Hypotenuse [SOH]
Cosine=Adjacent/Hypotenuse [CAH]
Tangent=Opposite/Adjacent [TOA]

(Now I just hope I got that right -- that's all strictly from memory...) :)

As for actually USING these things... hey, I was a Computer Science major. I never *DID* understand why advanced math was supposed to be required in order to type instructions on a screen, and observe the results.

(LOGIC, on the other hand, would be *HIGHLY* useful to programmers -- and therefore, wasn't required at all. I took all three Logic courses anyway, as electives, because I *WANTED* to...)

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