An observer 1.6 m tall is 20sqrt(3) m...

An observer 1.6 m tall is `20sqrt(3)` m away from a tower. The angle of elevation from his eye to the top of the tower is `30o` . The height of the tower is: (a) 21.6 m (b) 23.2 m (c) 24.72 m (d) None of these

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