Home » The angle of elevation of the top of an unfinished building at point P which is 120 m away from its base is 30°. If the angle of elevation of the finished building at the same point would be 60°, find the height of the remaining part of the building.
The angle of elevation of the top of an unfinished building at point P which is 120 m away from its base is 30°. If the angle of elevation of the finished building at the same point would be 60°, find the height of the remaining part of the building.
July 28, 2023
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Question
The angle of elevation of the top of an unfinished building at point P which is 120 m away from its base is 30°. If the angle of elevation of the finished building at the same point would be 60°, find the height of the remaining part of the building.
Type
multiple_choice
Option
70 √3 m
incorrect
Option
75 √3 m
incorrect
Option
80 √3 m
correct
Option
85 √3 m
incorrect
Solution :
Let the height of remaining part of building be X.
