I took the DAT recently (June 21), and on my version, there wasn't anything specifically trig, but there was some geometry and knowing the standard right triangle relationships really helps. I would not waste your time trying to memorize the unit circle and various values of cos/sin, etc, or the different formulas for converting between all the diff values. I struggled with trig and thus invested a lot of time early on in studying to trying to get a basic mastery of it. I would've been MUCH better served working through a lot more statistics/probability and even gen algebra to get my speed up.
For QC:
The DAT Destroyer QC supplement is terrifically helpful, as well as Bootcamp, which includes QC questions. Even if you don't upgrade your Bootcamp subscription (which I highly rec), take the one free QR test, and you will get really helpful explanations as well as links to some more QC resources that are worth reading through.