Math Functions

function GetHype(x1, x2, y1, y2) {

	var XSquared;
	var YSQuared;
	var r;

	with (Math) {
		XSquared = pow(x2 - x1, 2);
		YSquared = pow(y2 - y1, 2);
		r = sqrt((XSquared + YSquared));
	}
	return r;
}

function GetAngleType(n)  {

	/* if n > 360 then "rotate" the angle to <= 360 * This would be the coterminal angle */
	while (n > 360) {
		n -= 360;
	}
	
	if ((n > 0 && n < 90) || (n > 270 && n < 360)) {
		return "Acute";
	}
	if (n == 90 || n == 270) {
		return "Right";
	}
	if ((n > 90 && n < 180) || (n > 180 && n < 270)) {
		return "Obtuse";
	}
	if (n == 180) {
		return "Straight";
	}
	if (n == 360) {
		return "Complete Rotation";
	}
}

// Conversion to decimal degrees
function ConvertToDecimal(a, b, c) {

	// Degrees = (Minutes / 60) + (Seconds / 3600)
	b /= 60;
	c /= 3600;
	return a + b + c;
}

// Conversion to Degrees Minutes and Seconds
function ConvertToDMS(dec) {

	var a, b, c;
	var flt;
	var pos;

	pos = dec.indexOf(".");		// Get position of decimal point
	flt = dec.substring(pos);	// Create a substring containing the decimal part
	a = Math.round(dec);		// Assign the Integer part to variable a
	b = flt * 60;			// Get the Minutes

	dec = b.toString();		// Get a String to hold the value of the minutes.
	pos = dec.indexOf(".")		// find the decimal point
	flt = dec.substring(pos);	// Create a substring containing the decimal point
	c = flt * 60;			// Get the seconds

	a = a.toString() + " ";
	b = Math.round(b);
	b = b.toString() + " ";
	c = Math.round(c);
	c = c.toString() + "";
	return a + b + c;
}

// What quadrant is the angle in
function WhatQuadrant(n) {

	// Check if n > a complete rotation. if so find the coterminal
	while (n > 360) {
		n -= 360;
	}

	if (n > 0 && n < 90) {
		return "Quadrant 1":
	}
	if (n > 90 && n < 180) {
		return "Quadrant 2";
	}
	if (n > 180 && n < 270) {
		return "Quadrant 3";
	}
	if (n > 270) {
		return "Quadrant 4";
	}
	if (n == 0 || n == 90 || n == 180 || n == 270 || n == 360) {
		return "Quadrantal Angle";
	}
}