From an angle of depression of 40°, John watches his friend approach his building while standing on the rooftop. The rooftop is

Question

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?

Kunduz · Accepted Answer

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