[CODE SNIPPET]Pythagorus'es Theorem

[iSDK]

Hey,

I was doing some maths homework before on Pythagorus'es theorem, and I decided to make a method which will return the hypotenuse. Unfortunately so far, I have only implemented the ability to work out the unknown side opposite the right angle. Anyways here is the code to do so:

Please PM me if you are going to use this code in your application.

- (float)getXFromSide1:(int)one andSide2:(int)two {
	int a = (one*one) + (two*two);
	float sqr = sqrt(a);
	return sqr;
}

You can call it by:

int side1 = 10;
int side2 = 1762
float hypotenuse = [self getXFromSide1:side1 andSide2:side2];
NSLog(@"%.2f", hypotenuse);

Please PM me if you are going to use this code in your application. Enjoy..

[iisword]

Try this(only works with right triangles):

-(float)getTriangleSide:(float)sideOne withSide:(float)sideTwo findingHypotenuse:(BOOL)hypo
{
	float answer;
	if(hypo)
	{
		answer = (float)sqrt(pow(sideOne, 2) + pow(sideTwo,2));
		return answer;
	}
	else
	{
		if(sideOne > sideTwo)
		{
			answer = (float)sqrt(pow(sideOne,2) - pow(sideTwo, 2));
			return answer;
		}
		else if (sideOne < sideTwo)
		{
			answer = (float)sqrt(pow(sideTwo, 2) - pow(sideOne, 2));
			return answer;
		}
		else if (sideOne == sideTwo)
		{
			return sideOne; //the user has put in an equilateral triangle
		}
	}
}

[iSDK]

Yeah I know that was a flaw with it. Thanks so much for the contribution, would you like me to put it in the OP? (with credits of course)

Originally Posted by iisword

Try this(only works with right triangles):

-(float)getTriangleSide:(float)sideOne withSide:(float)sideTwo findingHypotenuse:(BOOL)hypo
{
 float answer;
 if(hypo)
 {
  answer = sqrt(sideOne^2 + sideTwo^2);
  return answer;
 }
 else
 {
  if(sideOne >= sideTwo)
  {
   answer = sqrt(sideOne^2 - sideTwo^2);
   return answer;
  }
  else
  {
   answer = sqrt(sideTwo^2 - sideOne^2);
   return answer;
  }
 }
}

[iisword]

Made a correction. sideOne cannot equal sideTwo if not solving for hypotenuse because it will result in sqrt(0) which is an equilateral triangle error.

[Kalimba]

Originally Posted by iisword

Try this(only works with right triangles):

-(float)getTriangleSide:(float)sideOne withSide:(float)sideTwo findingHypotenuse:(BOOL)hypo
{
 float answer;
 if(hypo)
 {
  answer = sqrt(sideOne^2 + sideTwo^2);
  return answer;
 }
 else
 {
  if(sideOne > sideTwo)
  {
   answer = sqrt(sideOne^2 - sideTwo^2);
   return answer;
  }
  else if (sideOne < sideTwo)
  {
   answer = sqrt(sideTwo^2 - sideOne^2);
   return answer;
  }
  else if (sideOne == sideTwo)
  {
    return sideOne; //the user has put in an equilateral triangle
  }
 }
}

FWIW, this code doesn't do what you think it's doing.

[iisword]

and why not kal

[iisword]

also it works math wise, ran it, other than a build error (fixed below) the code is correct:

-(float)getTriangleSide:(float)sideOne withSide:(float)sideTwo findingHypotenuse:(BOOL)hypo
{
	float answer;
	if(hypo)
	{
		answer = (float)sqrt(pow(sideOne, 2) + pow(sideTwo,2));
		return answer;
	}
	else
	{
		if(sideOne > sideTwo)
		{
			answer = (float)sqrt(pow(sideOne,2) - pow(sideTwo, 2));
			return answer;
		}
		else if (sideOne < sideTwo)
		{
			answer = (float)sqrt(pow(sideTwo, 2) - pow(sideOne, 2));
			return answer;
		}
		else if (sideOne == sideTwo)
		{
			return sideOne; //the user has put in an equilateral triangle
		}
	}
}

it won't solve any other triangle other than a right.

[Kalimba]

Originally Posted by iisword

and why not kal

As you probably discovered, "variable^2" doesn't square the value in "variable". It's a perfectly legal C operation, but it's not doing what you think/thought.