You are the new stunt coordinator for a James Bond movie. In one scene the writers want to drop James Bond from a low flying plane into a moving convertible car.

The car is traveling at 40 m s ^-1 and is being chased by the plane, which is catching up to it by flying at 50 m s ^-1 with respect to the ground.

The plane is flying at a steady altitude of 60 m.

Daniel Craig is waiting to drop out of the plane. Not wanting to see Daniel splattered on the pavement below, you have placed carefully aligned cross-hairs which when Daniel sees the car through the cross hairs it will be time for him to drop from the plane. At what angle with respect to the horizontal should the car be seen by Daniel Craig (when he is in the plane) at the time he drops out of the plane?