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OpenStudy (anonymous):
The angle of the elevation of the top of a tower any point on the ground is 30o and moving 20 metres towards the tower, it becomes 60o. The height of the tower is A. 10 m B. 10√3 m C. 10/√3 m D. none of the above
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OpenStudy (anonymous):
C.
OpenStudy (anonymous):
its C :)
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