Two flagpoles have been fixed on flat ground. Two points A and B are located
along the straight line joining the feet of the two flagpoles. The angles of elevation
of the two flagpoles from A are 30x
and 60x
, and from B are 60x
and 45x
. The
distance between A and B is 10 m.
(i) Find the heights of the two flagpoles.
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