TriTrig for the TI-83 |
by Adam Brooke	      |	
http://basm.org	      |
adam@basm.org	      |
----------------------+
10-25-99
v1.1

To run: 
-Send the program TRITRIG.83p to your TI-83.  
-Run TRITRIG on your calculator to start the program

What it does:
TriTrig calculates the value of all angles and all sides of a right
triangle and displays the results graphically given at least: 1 angle 
value (besides 90 degrees) and 1 side value, or 2 side values.  Any 
two combinations can be used.  This program is extremely useful 
especially if you have to calculate the values of, say, 2 sides, and 
would otherwise need to go through multiple calculations.  

How to use:
Press enter to pass through the first screen, which simply displays the 
3 trig function equations in case by any chance you've forgotten them ;)
At the top of the new screen, there's a menu with 5 choices.  These
correspond with the top button row of your calculator.  For example,
the WINDOW button selects theta.  Once you've selected theta, adjacent,
opposite, or hypotenuse, you'll be prompted to enter that variables 
value.  Do so, and press Enter.  The value will appear at the
appropriate place on the graphical triangle.  Once you have entered 2
or more values, you can now solve.  Do this by pressing Y= (which will 
select the "=" choice.)  All of the values of the triangle will appear
at their appropriate place.  You're done!  Press enter to exit.  NOTE:
TriTrig rounds to three decimals.

TriTrig uses a series of algorithms to find out whether the triangle
can be solved with the values you've given so far, what variables you 
have entered, and which values must be calculated first in the series. 
It uses trig functions to find the actual triangle values.  Because of 
this, you might be able to learn something by looking at the program 
source.  Feel free to email me if you have any questions.

If you find any bugs in this program, tell me immediatly so I can fix
them.  Hopefully, this program will be a help to physics and calculus 
students.

Thanks to:				     |
-You, for reading this document		     |
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HISTORY

v1.0 : 1465 bytes : released 10-13-99
-First version
-Graphical Layout

v1.1 : 1457 bytes : released 10-25-99
-Fixed bug where when the triangle was solved for using the values HYP
and ADJ, the OP value displayed was wrong
-SLIGHT decrease in mem size
