A park ranger is up in a 120 foot lookout tower. The ranger can see a small fire in a field that is 1500 feet away from the base of the tower. What is the ranger's angle of depression when looking down at the fire from the tower?
tan (angle ) = opposite / adjacent opposite is 120 ft adjacent = 1500 ft
then arctan (angle ) = 120/1500 = _______________ degrees