I'm trying to major in history or journalism. Should I take trigonometry, or do you think that's not needed? I know it varies from school to school, but overall, do you think I'll be fine without trig?

Well, for your major it will not be needed. However, some schools require a certain score on the math section of the SAT. If you do not meet the minimum score, you may be placed in a class like college algebra. So, if you have not taken the SAT and scored at least a 420 (dependent upon school), then you may want to take trig because it would help you on the math section of the SAT.