As a mediocre frontend dev, this hits hard. I bought a bunch of texts to up my DS&A and college level math skills as I'd like to eventually be able to excecute on 3D animation in the browser, but the books end up sitting on my desk as I consider I'm too old/there're too many people who _do_ have these skills already, etc.
Luckily, the math for rudimentary 3d is pretty accessible and well documented. There are tons of quality libraries out there for doing linear transformations, so you likely won't need to learn the nuts & bolts unless you really want to. As a bonus, working in 3d is the best way to build an intuition for a lot of linear algebra subjects.