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 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 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 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 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 of a cliff observes a boat at an angle of depression of 30^(@) which is approaching the shore to the point immediately beneath the observer with a uniform speed.Six minutes later,the angle of depression of the boat is found to be 60^(0). Find the time taken by the boat to reach the shore.

A man on a cliff observes a boat at an angle of depression of 30^(@) which is approaching the shore to the point immediately beneath the observer with a uniform speed.Six minutes later; the angle of depressions of the boat is found to be 60^(@). Find the time taken by boat to reach the shore.

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.