Check Vector Component Form for Correctness

I am creating a Desmos activity that involves writing vectors in component form, but no matter which symbol I try using for the angle brackets such as <>, \langle \rangle, ⟨⟩ , 〈〉, they do not seem to be recognized as valid latex.

U5 Vectors Option Playlist • Activity Builder by Desmos

This should help: [Copy of] vectors • Activity Builder by Desmos