A person on the top of tower observes scooter moving with uniform velocity towards the base of the tower he finds that

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Q 3011180020.     A person on the top of tower observes scooter moving with uniform velocity towards the base of the tower he finds that the angle of depression changes from`30^{\circ}` to `60^{\circ}` in 18 minutes The Scooter will reach the base of the tower in next
A

9 minutes

B

`frac {18}{(\sqrt{3}-1)}`

C

` 6\sqrt{3}` minutes

D

The time depends upon the height of the tower

HINT


Solution
(Provided By a Student and Checked/Corrected by EXXAMM.com Team)

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