A man on top of a vertical tower observes a car moving at a uniform speed coming directly towards it. If it takes 12 mins for the angle of depression to change from 30 degree to 45 degree. how soon after this, will the car reach the tower?

Asked by Deepshikha deepak | 26th Dec, 2013, 08:55: PM

Expert Answer:

Answered by Vimala Ramamurthy | 26th Dec, 2013, 10:58: PM

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