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Question

AB is a vertical pole with B at the ground level and A at the top. A man finds that the angle of elevation of the point A from a certain point C on the ground is 60o. He moves away from the pole along the line BC to a point D such that CD=7 m. From D the angle of elevation of the point A is 45o. Then the height of the pole is

A
732 (31)m
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B
732(13+1)m
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C
732(131)m
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D
732(3+1)m
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