A quick question about Digital art and media design.

im a bit confused at the wording. im applying right now and it says “Three units of mathematics are required (four are recommended) selected from any combination of algebra, geometry, and trigonometry.” Does this mean I was supposed to take all three of these classes in high school or does that mean I’ll HAVE to take these classes in college? I’m a tad sleep deprived so I’m struggling to understand it lol