1.

The angle of elevation and depression of the top and bottom of a lighthouse from the top of a building 60 m high are 30° and 60° respectively. If x meter is the difference between the heights of the light house and the building and y meters is the distance between them, the approximate value (x + y) is:

A. 48.3
B. 34.6
C. 54.6
D. 69.3
Answer» D. 69.3


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