How to calculate the angle of a trajectory to the target but without gravity and heigh and time

It is even possible? Im trying to make car turns smoothly between paths so I need to dynamic calculate angle of trajectory for wheels. Maybe somebody could explain to me how can I do this? Please

Not sure what the paths you mention stand for. But if you want to rotate your car smoothly towards a given point in space, I think you should make use of Quaternions. Take a look at the Quaternion methods, such as : Slerp, RotateTowards, and so on.
Maybe this example could help :