A person standing on the bank of river observes that the angle of elevation of the top of…
Mathematics · JEE Main · NTA Exams — Trigonometry
A person standing on the bank of river observes that the angle of elevation of the top of a tree on the opposite bank of the river is 60° and when he retires 40 meters away from the tree the angle of elevation becomes 30°. The breadth of the river is
- 40 m
- 30 m
- 20 m
- 60 m
Answer
(C) 20 m
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