Unity - Fake Rotation It's a Move

Vector3 rut = new Vector3(0, 0, 20);
Vector3 targetPos = Vector3.zero;

Vector3 pos = targetPos;

pos.x += (float)(25f * Mathf.Cos(angles.x) * Mathf.Sin(angles.y));
pos.y -= (float)(25f * Mathf.Sin(angles.x));
pos.z += (float)(25f * Mathf.Cos(angles.x) * Mathf.Cos(angles.y));

_sun.transform.position = new Vector3(pos.x, pos.y, pos.z);