Angle between two vectors

Unity Engine
1

It is most propably easy one, but I try to figure this out for a long time (I thought I manage to resolve this, but time ang again it is proven I`m wrong). I manage to get right angle between x and z vector to target, but no luck between y and z ( I thought it will be analogically similar and propably it is)

Here is working code:

        Vector2 frontAheadVector2;
        Vector2 targetHeadingVector2;


        Vector3 targetDirection = Target.transform.position - transform.position;

        frontAheadVector2 = new Vector2(transform.forward.x,transform.forward.z);
        targetHeadingVector2 = new Vector2(targetDirection.x,targetDirection.z).normalized;
   
   
        float angleToTargetHor = Vector2.Angle(frontAheadVector2,targetHeadingVector2);
   
        Vector3 cross = Vector3.Cross(frontAheadVector2, targetHeadingVector2);
   
        if (cross.z > 0)
            angleToTargetHor *= -1;

And this works good, but here is another one, wich always gives me wrong result:

        Vector2 frontAheadVector2;
        Vector2 targetHeadingVector2;

        Vector3 targetDirection = Target.transform.position - transform.position;

        frontAheadVector2 = new Vector2(transform.forward.y,transform.forward.z).normalized;
        targetHeadingVector2 = new Vector2(targetDirection.y,targetDirection.z).normalized;
    


        float angleToTargetVer = Vector2.Angle(frontAheadVector2,targetHeadingVector2);
    
        Vector3 cross = Vector3.Cross(frontAheadVector2, targetHeadingVector2);

        if (cross.z < 0)
            angleToTargetVer *= -1;

I do not understand why it isnt working, on first axis is Y, so understanbly calculations are on x and z axis, and it works, in second I need second axis - X, so angle is calculated from y and z, but it doesnt work. Any solutions?

2

I have found the solution, somehow I had to calculate angle between y and x vectors, and I have no idea why… but now it works.