1.

A man from the top of 100 metres high tower sees a car moving towords the tower at an angle of depression of 30^(@).After some time the angle of depression becomes 60^(@). The distance travelled by the car during this time is _____ metres

Answer»

`(100)/(sqrt(3))`
`(200)/(sqrt(3))`
`(10)/(sqrt(3))`
`(20)/(sqrt(3))`

ANSWER :B


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