From the top of a building 30 m high, the top and bottom of a tower are observed to have angles of depression 30º and 45º respectively. Find the height of the tower.
A.60(1-1/√3) m
B.50(1-1/√3) m
C.40(1-1/√3) m
D.30(1-1/√3) m
Answer: D
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