[QUOTE=randy121294;1072052]I was writing an email to a teacher and then caught myself with this confusing question.
"Or does that only apply if I were to find length/magnitude, not vector?" is correct.
When asking a question, we use the first-person-singular form of a verb.
Does that apply to all situations?
Will (she)(you)(they) apply to attend university?
(Does she)(Do you)(Do they) have enough money for university?
Student or Learner