Question:

# From an angle of depression of 40°, John watches his friend

Last updated: 7/7/2022

From an angle of depression of 40°, John watches his friend approach his building while standing on the rooftop. The rooftop is 16 m from the ground, and John's eye level is at about 1.8 m from the rooftop. What is the distance, to the nearest tenth of a meter, between John's friend and the building?