There are many rules to help us judge what the word "which" stands for in a sentence. But there always have so many exceptions. And the best way for judging seems to use these rules as well as make the meaning of a sentence logical. But do you meet the situations in which you don not have enough knowledge to see whether the sentence is logical, especially when you are a beginner in some field. For examples:
In the above sentence, what does "which" stand for? The real variable or the symbol tan-1? If i have no idea about the argument of the complex variable of the logarithmic function, how can I make the judgement?
In these situations, as a native speaker, what will you do? Do you have a golden rules or some experiments? Or just search for the concepts until you know everything? Well, that makes sense, but sometimes will it be a great challenge?
Thanks in advance.