Radar Decoy

A certain airplane has a speed of 270 km/h and is diving at an angle of 27° below the horizontal when a radar decoy is re­leased.
 The horizontal distance between the release point ilnd the point where the decoy strikes the ground is 2.3 km..
How long was the decoy in the air?
(b) How high was the plane when the decoy was released? See the figure below.