1.

A person stading on the bank of a river observerves that the angle of elevation of the top of the tree on the opposite bank of the river is 60^(@) and when he retires 40 metersaway from the tree the angle of elevation becomes 30^(@). The breadth of the river is

Answer»

`20M`
`60M`
`40M`
`30M`

ANSWER :A


Discussion

No Comment Found