Re: TIB: lots of help needed

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Re: TIB: lots of help needed


>Ok you BASIC junkies.  I need some help.

Yep.

>I have a TI-85.

K

>I'm trying to write a program that will find all the unknowns of a triangle
>if given all known data.  I know, there are programs already out there like
>that, but i want to write one myself.

Just take your basic algebra skills to do something like this:

If you know the points, squareroot((X1-X2)^2+(Y1-Y2)^2))

That will calculate the distance from A to B, B to C.....

If you know the lengths you could do something like this

squareroot(A^2+B^2)

If you just didn't know how to do that, then there it is.  If you are
unsure on how to enter it in to your calculator please ask.


>What i want it to do is...have the person enter everything he/she knows.
>So, i'm going to prompt the user for:
>
>A=?
>B=?
>C=?
>a=?
>b=?
>c=?
>
>In case you don't know, the capital letters are for angles and the lower
>case letters are for sides.
>Suppose i have enough data to determine that the triangle is SAS  (side,
>angle, side).
>I'd have to skip
>
>B=?
>C=?
>a=?
>
>in order to make it SAS.
>Well, i can't skip it just by pressing enter.  I have to enter something
>numeric.  Is there anyway to just bypass that?  You know, just skip it by
>pressing something, without enter data.
>
>If there is no way then..
>The other problem is, if i enter 0 (the number) how would i get the
>calculator to recognize that it means nothing.  Mainly, how would i get the
>calculator to recognize everything, but "0's."
>
>I want the calculator to recognize that it's SAS by the data given and know
>that "0's" in the prompt are nothing.  That is pretty much my main question.
>
>My friend is writing one that you tell the calculator which kind of
>triangle it is, but i want the calculator to recognize it by itself.  I
>just wanted to show him up.  =)
>
>How would i code that?
>
>Well, hope you can help.  Thanks a bunch.  I know this is sort of long, sorry!
>
>Alex
>
>Visit my homepage at:
>http://www.fortunecity.com/skyscraper/coding/190/index.html
>
>Or email me at:
>kimo@iland.net
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