A person standing on the bank of a 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:

Height and Distance: JEE Main 2004 Mathematics question

JEE Main 2004 · Annual, Paper 1 · Q3899

JEE Main 2004Annual, Paper 1MathematicsMediumHeight and Distance38× since 2004

A person standing on the bank of a river observes that the angle of elevation of the top of a tree on the opposite bank of the river is

{60^ \circ }

and when he retires

40

meters away from the tree the angle of elevation becomes

{30^ \circ }

. The breadth of the river is :

JEE Main 2004 Height and Distance Question with Solution (Annual Paper 1, Q3899) | JEE Arc