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On a ground , there is a vertical tower with a flagpole on its top . At a point 9 m away from the foot of the tower , the angles of elevation of the top and bottom of the flagpole are 60° and 30° respectively . The height of the flagpole is

5√3 m
6√3 m
6√2m
6√5 m

Correct Answer: 6√3 m

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