A man in a boat rowing away form a light house 100 m hight takes 2 minutes to change the angle of elevation of the top of the light house from `60^@` to `30^@`. Find the speed of the boat in metres per minute.`(Use sqrt 3 = 1.732)`

A man in a boat rowing away from a light house 100 m high takes 2 minutes to change the angle of elevation of the top of the light house from 60° to 30°. Find the speed of the boat in meters per minute. [Use sqrt(3) = 1.732 )

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 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.

The height of a light house is 40 m. The angle of depression of a ship from the top of the light house is 60^(@) . Find the distance of ship from the light house.

O a horizontal plane, there is a vertical tower with a flagpole on the top of the tower. At a point, 9 metres away from the foot of the tower, the angle of elevation of the top and bottom of the flagsaff are 60^(@)" and "30^(@) respectively. Find the height of the tower and the flagpole mounted on it. (Use sqrt3=1.732 )

A 1.6 m tall observer is 45 metres away from a tower .The angle of elevation from his eye to the top of the tower is 30^(@) , then the height of the tower in metres is (Take sqrt(3)=1.732)

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.

From a point P on the ground the angle of elevation of the top of a 10 m tall building is 30^(@) . A flag is hoisted at the top of the building and the angle of elevation of the top of the flagstaff from P is 45^(@) . Find the length of the flagstaff . (Take sqrt(3)=1.732)