From an office window 42.5m above level ground, a building 156m tall at a distance of 104m is observed across a courtyard. Find the angle of depression of the base of the building.
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From an office window 42.5m above level ground,
a building 156m tall at a distance of 104m is observed across a courtyard.
Find the angle of depression of the base of the building.Code:* | 104 | * - - - - - + | * θ | | * | 42.5 | * | 42.5 | * | | * | * - - - - - * 104
We have: .
Therefore . . .