What is the angle of depression from the plane to the​ building?

Question

An aerial photographer who photographs real estate properties has determined that the best photo is taken at a height of approximately 476 ft and a distance of 839 ft from the building. What is the angle of depression from the plane to the​ building?

Answer 1

Draw and label a diagram.

The angle of dpresssion is equal to the angle of elevation from the house.

Use tangent function.