A moving boat is observed from the top of a 150 m high cliff moving away from the cliff. The angle of depression of the boat changes from `60^@` to `45^@` in 2 minutes. Find the speed of the boat in m/h.

A boat is being rowed away from a cliff 150 meter high. At the top of the cliff the angle of depression of the boat changes from 60^(@) to 45^(@) in 2 minutes. Find the speed of the boat.

A boat is being rowed away from a cliff 150 meter high. At the top of the cliff the angle of depression of the boat changes from 60^(@) to 45^(@) in 2 minutes. Find the speed of the boat.

A man in a boat rowing away from a lighthouse 150 m high, takes2 minutes to change the angle of elevation of the top of the lighthouse from 60^(@) t o 45^(@) . Find the speed of the boat .

A man in a boat rowed away from a cliff 150 m high takes 2 min, to change the angle from 60^(@) to 45^(@) . The speed of the boat is

A man in a boat rowing away from a cliff 150m high takes 2 minutes to change the angle of elevation of the top of the cliff from 60^@ to 45^@ . The speed of the boat is

Form the top of a light house 60 m high with its base at the sea-level the angle of depression of a boat is 15^(@) . Find the distance of the boat from the foot of light house.

Form the top of a light house 60 m high with its base at the sea-level the angle of depression of a boat is 15^(@) . Find the distance of the boat from the foot of light house.

As observed from the top of a light house 100m above sea level, the angle of depression of a boat, sailing directly towards it, changes from 30^(@) " to " 45^(@) . Determine the distance travelled by the boat during the period of observation (sqrt3= 1.732)