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Trig Equation Solver
Solves for Hero's and Sin Area, Law of Cos, Law of Sin, and SSA
Matt Aldrich
4/16/98
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Hey,
thanks for picking up the program.  This is a simple trig program that solves the particular equations above.

Hopefully you are aware of how these formulas work but if your not just go ahead and read the rest of this


o	Hero's formula is for the area of a triangle that is not 90 degrees
	
	1. enter the three sides of the triangle
	2. The display will show the perimeter and the area of the triangle

o	The next choice is Sin Area this program will solve for area like 	Hero's BUT requires that the triangle be SAS.  This means you will 	have a side lenth, then an angle, than another side length THAT IS 	NOT OPPOSITE THE ANGLE.

	1. Enter angle
	2. Enter side
	3. Enter side 2 (not opposite the angle)
	4. Display will show values

o	Next is Law of Cos.  This program can either solve for an angle or a 	length of triangle.

	1. First decide wether or not you want to solve for a triangle length 	or an angle in the triangle.

	2. If you choose side, THE TRIANGLE MUST BE SAS!!
	   a) enter the angle
	   b) enter length
           c) enter length 2
	   d) display will show values
         
        3. If you "For angle" YOU MUST KNOW ALL THREE SIDES
           a)VERY IMPORTANT - for the angle you want enter the length of 	     opposite that angle
           b) enter other two lengths in any order
           c) display will show values

o	Next is Law of Sin.  This will solve for two unknown lengths if all
	three angles are known and ONE side is know.

	1. Enter all three angles (A,B,C)
	2. Enter 0 for X for the two values you want to find.
           ie. if you know A's length then enter B length and C length as 0
           (the lengths correspond with the angles)
        *note if more than one length is known just drop one length and use 	one otherwise the program won't work correctly*

o	and finally... SSA.  Use this formula when you have ONE ANGLE, A SIDE 
	OPPOSITE THE ANGLE, AND ANOTHER LENGTH.  This program will solve for 	the other length

	1. First enter the angle
	2. Enter Length opposite the angle
	3. Enter other side
	4. Values will be displayed
	
	NOTE: if two positive values are displayed then there are two 	possible answers
	
	if one positive value and one negative value are displayed then there 	is only one answer, the positive one!

	if it comes up and says no value, then there is no length (imaginary 	roots were achieved)


..........OK that about raps up my program, I tried to keep it simple but people at school were asking me how it works so I figured writing this text would be helpful..

Oh one more thing, ya know I would appreciate if that you wanted to edit my program please tell me, and maybe send me a copy! :-)

OK,
later

Matt Aldrich

	questions, comments?
mail:
beboe007@hotmail.com