The avengers are on a nightly patrol making sure that all is safe in the city. At one end of the town Iron Mam, who is 11,000 feet up on the air spots the evil Thanos wreaking havoc. Iron Man dives at an angle of depression of 15° to save the day. At the same time, Thor is patrolling at 20,000 and dives an angle of depression of 29°. Assuming that they fly at the same speed, who will get Thanos first and save the day?