A balloon is now stuck at a tree 280meters away from the ground. The balloon is observed by the crew of boat as they look upward at an angle of 25 degrees. Twenty-five seconds later, the crew has to look at an angle of 65 degrees to see the balloon. How fast was the boat traveling?

Answer 1

well, the distance traveled by the boat is found using

d = 280 cot25° - 280 cot 65°

speed = distance/time