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		Interactive triangle formulas 1.1
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Programmer: David Lindstroem, a member of the Cirrus Programming group.
Calculator: Ti 83 +
      Size: 2189 bytes
  Language: asm (nostub)

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		INTRODUCTION
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This program will help you find formulas for
the sides, angles and the area in a right or
non right triangle. You tell the program which other objects
you know, and it will choose the correct formula for you.

		
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		How to use
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1. Start the program with Asm(prgmITF
   This is an assembly program, and it can't be run
   by just selecting it in the program menu and pressing enter.
   Instead, pick Asm( from CATALOG, then choose ITF from the program menu 
   and press [enter]

2. Choose the triangle type; right or non right
   
3. Choose which object you wish to find the formula for. A triangle with labels
   is drawn on the screen, press [graph] to draw the triangle in another view.

3. Now you must tell the program what other objects you know. This is done 
   by pressing the corresponding F1-F5 keys, also named 'soft keys'. The 
   program will display a formula if it finds any suitable.

4. Pressing [clear] will bring you back to the main menu and from there, you
   can quit ITF by choosing 'quit' in the menu or pressing [clear] again.
	
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	FORMULA	SYNTAX
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All formulas are displayed according to ti83+ input syntax,
this will mean that sin(A)/sin(B)*a is
		sin(A)
		-----  * a 
		sin(B)		

ITF uses the following methods:
	sine
	cosine
	tangent
	law of sines, cosines
	the area law
	pythagoran Theorem
	
If you have any ideas/bug reports/comments, feel free to email me.
and don't forget to visit our homepage.


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		Adresses
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 e-mail: okvin@tiscali.se
Website: http://cirrus.tigalaxy.com