Question: A building has two storeys with unequal heights. From an observation point on the ground 3 0 ft from the bottom of the building, the

A building has two storeys with unequal heights. From an observation point on the ground 30 ft
from the bottom of the building, the angle of elevation to the bottom of the second storey is 27
degrees, and the angle of elevation to the top of the second storey is 42
degrees. Find the height of the second storey.

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