A man on the top of a tower: standing on the seashore: finds that a boat coming towards him takes 10 min for the angle of depression to change from `30^@` to `60^@`. Find the time taken by the boat to reach the shore from this position

A man on the top of a tower,standing on the seashore,finds that a boat coming towards him takes 10 minutes for the angle of depression to change from 30o to 60o. Find the time taken by the boat to reach the shore from the position.

A man on the top of a tower, standing on the Sea-shore, finds that a boat coming towards him takes 10 minutes for the angle of depression to,change from 30^@ to 60^@ . How soon the boat reach the sea-Shore? समुद्र के किनारे एक टॉवर के शीर्ष पर खड़ा व्यक्ति यह पाता है कि उसकी तरफ आ रही नाव का अवनमन कोण 10 मिनट में 30^@ to 60^@ हो जाता है। नाव समुद्र के किनारे देर में आ जाएगी?

A person from the top of a hill observes a vehicle moving towards him at a uniform speed. It takes 10 minutes for the angle of depression to change from 45^(@) to 60^(@) . After this the time required by the vehicle to reach the bottom of the hill is:

A man on the top of a vertical tower observes a car moving at a uniform speed coming directly towards it.If it takes 12 minutes for the angle of depression to change from 30^(0) to 45^(0) ,how soon after this will the car reach the tower? Give your answer to the nearest second.

A man observes a car from the top of a tower, which is moving towards the tower with a uniform speed. If the angle of depression of the car change from 30^(@)" and "45^(@) in 12 minutes, find the time taken by the car now toreach the tower.

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^@ , which is approaching the foot of the tower with a uniform speed. Six seconds later, the angle of depression of the car is found to be 60^@. Find the time taken by the car to reach the foot of the tower from this point.