유니티에서 벡터 사잇각 찾기

Vector3 from = new Vector3(0, 0, -1);

Vector3 to = new Vector3(0, 0, -1);

a = Vector3.Angle(from, to);

Vector3 p = Vector3.Cross(from, to);

Vector3 q = new Vector3(0, 1, 0); //Vector3.up

if(Vector3.Dot(p, q)<0)

{

 a  = a*(-1) + 360;

}

transform.eulerAngles = new Vector3(0, a, 0);