A straight highway leads to the foot of a tower. A man standing on its top observes a car at an angle of depression of `30^@`, which is approaching the foot of the tower with a unifrom speed. 6 seconds later, the angle of depression of the car becomes `60^@`. Find the time taken by the car to reach the foot of the tower from this point.

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.

A straight highway leads to the foot of a tower. A man standing at the top of the tower observes a car at angle of depression of 30o , which is approaching to the foot of the tower with a uniform speed. Six seconds later, the angle of depression of the car is found to be 60o . Find the further time taken by the car to reach the foot of 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 angle of depression of 30^0, which is approaching to the foot of the tower with a uniform speed. Six seconds later, the angle of depression of the car is found to be 60^0dot Find the further time taken by the can to reach the foot of the tower.

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.

From the top of a tower 180 m high, it was observed that the angle of depression of the bottom of a cat sitting on the ground was 30^(@) . Find the distance of the cat from the foot of the tower.

From the top of a cliff 300 metres high, the top of a tower was observed at an angle of depression 30^@ and from the foot of the tower the top of the cliff was observed at an angle of elevation 45^@ , The height of the tower is

A man from the top of a 100 metres high tower observes a car moving towards the tower at an angle of depression of 30^(@) . After some time, the angle of depression becomes 60^(@) . The distance (in metres) travelled by the car during this time is