Now that we have dealt with our technical debt we can begin towrite code in earnest. Hub Travel has requested that a graphic beadded to their program that shows the flight path between theselected airport hubs. They also would like to use the entiredatabase of hubs instead of the small test set we have been using.They have provided a more accurate formula for calculating distancebetween points on a sphere a formula for calculating the midpointof the flight curve since the flight path will not necessarily be astraight line and a formula for calculating the xy coordinates onthe US Map (Form 2) that correspond to the latitude and longitude.That last calculation is not as straight forward as it would atfirst appear. On a Mercator projection map the latitudes appear tobe curved and the longitudes are closer together at the top of themap than they are at the bottom. For those tasks in this sprintthat involve adding new functions you will need to add a unit testas well.