Question

A straight highway leads to the foot of a tower a man standing at the top of the tower observes a car at an angle of depression of 30 degree which is approaching the foot of the tower with a uniform speed 6 seconds later the angle of depression of the car is found to be 60 degree find the time taken by the car to reach the foot of the tower from this point.

Answer 1

hope this will help u...
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and also here in the answer x=6 sec..ok

and your answer is
3 seconds...
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