A person standing on the bank of a river observes that the angle of elevation of the top of a tree standing on the opposite bank is `60^0dot` When he move 40 metres away from the bank, he finds the angle of elevation to be `30^0dot` Find the height of the tree and the width of the river.

A person standing on the bank of a river observes that the angle of elevation of the top of a tree standing on the opposite bank is 60^(@) . When he moves 40 m away from the bank, he finds the angle of elevation to be 30^(@) . Find the height of the tree and the width of the river. (sqrt3=1.73)

A person standing on the bank of a river observes that the angle of elevation of the top of a tree standing on the opposite bank is 60^(@) . When he moves 40 meter away from the bank, he finds the angle of elevation to be 30^(@) . Find the height of the tree and width of the river " [take", sqrt(3)=1.732]

A person standing on the bank of a river observes that the angle of elevation of the top of a tree standing on the opposite bank is 60^(@) . When he moves 40 m away from the bank, he finds the angle of elevation to be 30^(@) . Find the height of the tree and width of the river. (sqrt3 =1.73)

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 where he retires 40 meters away from the tree the angle of elevation becomes 30^(@). The breadth of the river is

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 where he retires 40 meters away from the tree the angle of elevation becomes 30^(@). The breadth of the river is

A person standing on the bank of a river finds that the angle of elevation of the top of a tower on the opposite bank is 45^@ , then which of the following statements is correct ?