A) 15
B) \[15\sqrt{3}\]
C) \[10\sqrt{3}\]
D) 10
Correct Answer: D
Solution :
[d] Let h be the height of tree PQ and breadth of river PS be x ft. Angle of elevation subtended by a tree is \[60{}^\circ \]. Also, when he retreats 20 feet, the angle becomes\[30{}^\circ \].You need to login to perform this action.
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