Hi. I am struggling to understand a key on the graphing calculator.
X,T,0,n (only the zero has a horizontal line in the center. What does this 0 stand for and how should it be brailled in this instance.
I have researched a bit on the internet and it seems to stand for a "polar coordinate" in a couple places. It is also described as being the Greek theta in some instances. I just wonder how I should be brailling the "0" with the horizontal line in center. Thanks, Patty