My whole career has been in-house industrial stuff. I've never used past trig--and that only to draw a picture of a toilet. (Legitimate--while we didn't do an

My whole career has been in-house industrial stuff. I've never used past trig--and that only to draw a picture of a toilet. (Legitimate--while we didn't do anything with toilets the graphic marked where it would be, thus where our stuff couldn't be.) I have found a possible use for error correcting codes but that's way beyond anything I ever studied and thus it probably will never be implemented.