An aeroplane when flying at a height of 2000 m.when the plane was vertically above a pointnM, an observer standing at a point P sa

An aeroplane when flying at a height of 2000 m.when the plane was vertically above a pointnM, an observer standing at a point P saw rhe air craft at an angle of 45, FIND THE DISTANCE OF THE OBSERVER FROM THE POINT ‘M’