BITSAT Mathematics Properties Of Triangles Online Test Set A

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Question 1

Question

A person standing on the bank of a river observes that the angle subtended by a tree on the opposite bank is 60å¼. when he retreats 20 feet from the bank, he finds the angle to be 30å¼. The breadth of the river in feet is :

Answer

10 √3

15 √3

10

15