Computes the distance in miles between two sets of coordinates.

distance.js

	/**
	 * Computes the distance in miles between two sets of coordinates.
	 *
	 * @param   object  from    object containing longitude and latitude members
	 * @param   object  to      object containing longitude and latitude members
	 * @return  number
	 */
	Inova.Models.Location.distance = function(from, to) {
		// approx. dist in miles, nothern hemisphere
		// http://www.meridianworlddata.com/Distance-Calculation.asp
		try {
			return Math.sqrt(Math.pow(69.1 * (to.latitude - from.latitude ), 2) + Math.pow(53 * (to.longitude - from.longitude ), 2)).toFixed(1);
		} catch( e ) {
			throw (e );
		}
	};