In my opinion, you will need all of your algebra and trig, but not very much of your geometry. Make sure you really understand functions.
I'm a high-school student doing concurrent enrollment at one of my local community colleges because of my unique schooling situation. I finished Pre-Calculus/Trigonometry a year ago and I'm planning on taking Calculus I this summer (in about two months) but I need to pass the assessment test. I have a friend who went ahead and took Calculus I and II this school year and she expressed that what she thought was difficult about Calculus was the advanced Algebra II and Trigonometry aspects of it. I'm pretty solid in my Algebra, though I will be reviewing, but because of pressed time I was wondering if it was necessary for me to review Pre-Calculus? With only two months left I'd really like to just focus on the framework of what I'll really need for Calculus I...
So, should some touch up on my Algebra II, Basic Geometry, and Trigonometry skills be sufficient to provide me with solid groundwork for Calculus I Thank you!
P.S: I'll also be reviewing some Basic Geometry as well, as you need to pass this section before you can even get to the Trigonometry section.
EDIT: If this helps I'll be using this textbook and some other related online resources to review for the Trigonometry portion:
(Chapters 5 –8 are supposed to be the Trig portion of the book)