Who cares? I can't remember the trigonometry I studied in school even though I can still work a calculator. It's useful to understand the basics so you develop

Who cares? I can't remember the trigonometry I studied in school even though I can still work a calculator. It's useful to understand the basics so you develop an intuition, but don't stress if you can't actually solve the problems. You almost certainly won't need to use them in your career anyway unless you work in some incredibly niche areas.