Suppose you started at 0 degrees N, 0 degrees E on the earth. You started traveling due north, continuing straight for 2439 miles, turned 60 degrees counter-clockwise, traveled another 4878 miles, turned 60 degrees counter-clockwise traveled another 4878 miles, turned 60 degrees once again, and traveled another 4878 miles. At this point where would you be? Please explain the mathematics of how you came to your conclusion.