Incident wave of boundary between two different dielectrics

[c_l_k_t]

http://imageupload.org/getfile.php?id=171120&a=a955b8cf905480ad89ee96abfea140da&t=4f27421f&o=36BBD6199C49C981F6CC7562A37DC69B664D4F14FBA06DFCF24E9B24875233233B2BA7CB1980&n=%E6%9C%AA%E5%91%BD%E5%90%8D.png&i=1



I have just been given the question without much support so I can't even get a start of the question.
I thought the wavevector should be the given matrix but apparently it isn't.
Maybe I got problem with understanding the question; could anyone help?

 

[MisterX]

If you want help, please use the required format and provide more details about the problem.

 

[c_l_k_t]

If you want help, please use the required format and provide more details about the problem.

Sorry, I think my image link had been dead and I have fixed it now.

 

[c_l_k_t]

Sorry, I think my image link had been dead and I have fixed it now.