That would depend a great deal on exactly what it is that you are trying to prove. Unless your instructor is fond of red herrings, one would suppose that each of the given congruencies are used somewhere in your proof to show other congruencies or equal measures, or equal parts by CPCT, or some such relationship. You need to get your arms around the concept that we can't see your book or assignment sheet or whatever you are working on. In other words, please use your head for something besides a hat rack when posting on this site.
John
Egw to Beta kai to Sigma
My calculator said it, I believe it, that settles it