<p>I'm a student at CSUN trying to transfer to USC. I probably flunked my first class (trigonometry) at CSUN and I'm planning to retake it and ace it this upcoming fall semester to raise my GPA before I apply. All my other grades are fine. The thing is, USC doesn't offer a separate trigonometry course, so is it a waste of time if I retake it? I don't think this class is going to transfer so what good would it be to retake it? I'll do it if I have to, just need to make sure.</p>