Using a rotation in an if statement

Hello guys so I'm trying to get a specific rotation angle and make it do something... But it doesn't work.

public Transform a, b

 void Update()
 {
     if (a.localRotation.eulerAngles.z == 0 && b.localRotation.eulerAngles.z == 30)
     {
         Debug.Log("Works GREAT!");
     }
 }

My issue though is that it works when I do this...

 void Update()
 {
     if (a.localRotation.eulerAngles.z >= 0 && b.localRotation.eulerAngles.z >= 30)
     {
         Debug.Log("Works GREAT!");
     }
 }

or this...

 void Update()
 {
     if (a.localRotation.eulerAngles.z <= 0 && b.localRotation.eulerAngles.z <= 30)
     {
         Debug.Log("Works GREAT!");
     }
 }

I need to get exact values though and then do something.

Please Help.