I don't think this is a linked expression requiring special margins so shouldn't all the runovers begin in cell 9?
It feels very uncomfortable to separate the number attached to the front of "sin" but then it also feels wrong to divide the grouped expression. My "logic" was that the reader would expect the continuation of the grouped expression on the next line. I also considered dividing before the opening parenthesis within the grouping in brackets. No particularly good choices here. 🙁
Also, I had another question on that attachment about what to include within Nemeth indicators, if you wouldn't mind taking a look at that please.