Darius is camping in the woods. He notices on a map that his
campsite is 50 yards from the ranger station. He walks 18 yards
towards the ranger station before stopping to climb to the top of
a tree to locate the station. The tree forms the altitude of a right
triangle that connects the top of the tree, Darius’s campsite,
and the ranger station. Sketch a diagram of the situation and
determine the angle of depression formed by Darius’s sightline
to the ranger station.