Doug plans to launch a model rocket in a field. He is sitting a safe distance of 20 yards from the rocket when it takes off straight upward. He estimates that the angle of elevation from his eye level to the highest point the rocket reaches is about 75. How high did the rocket fly?

Solution:

The height of the rocket is H

H/20 = tan75

H = 20*tan75= 74.44 yard

So the height of the rocket is 74.44 yards