Re: TIB: lots of help needed

To: ti-basic@lists.ticalc.org
Subject: Re: TIB: lots of help needed
From: gussie@alaska.net (Grant Stockly)
Date: Fri, 13 Feb 1998 18:18:19 -0700
Reply-To: ti-basic@lists.ticalc.org

>Grant Stockly schrieb:
>>
>> >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)

I thought he meant making a program that would do different math operations
with shapes, Mr. Flames are us.

>I'm not quite sure about what you know about maths at that point, the point is
>that you don't know anything about triangles with angles of which none is 90
>degrees or you have never reflected about this problem, it's NOT as easy to
>solve as you may think!                 A.K.
>>
>> 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
>>
>>