I'd like to qualify what TheTick said: I'd argue that you should, indeed MUST, continually ask yourself "where am I going to use this" while you're getting your education. Making your education relevant while you're getting it takes information and turns it into useful knowledge. That's why co-op experience is so valuable. In your case, you have at least four years of industrial experience to draw on to make your education relevant to you. With the proper attitude, that can be a rare gift which can make you a superb engineer.
What you must NOT do is to conclude, from the perspective of a student, that the answer "I don't know" or "I can't imagine" equates to "therefore there's no point in paying attention to this"! Sure, there's some garbage in every educational program, but there was precious little in my own.
By the way, we don't get B.A.s or B.Sc.s in engineering here, we get B.A.Sc.s (Bachelor of APPLIED Science).