Unit Circle in Braille, proper scale, precalc tool

A unit circle made for vision impairment. I had a student who sometimes uses classroom tools for learning. I may upload a non-braille version. My student told me that you can paste braille dots on surfaces with some special tape. That way, they can customize what it says. I did not design the braille, so I'm not exactly sure how to read it. I just made a better version of one that already existed for use.