Texas Instruments TI-84 - Manual (Page 59)

Chapter 2: Math, Angle, and Test Operations 56
Note: On the TI-84 Plus, the negation symbol ( M) is shorter and higher than the
subtraction sign ( N), which is displayed when you press ¹.
Pi Pi Pi Pi
p (Pi, y B) is stored as a constant in the TI-84 Plus. In calculations, the TI-84 Plus
uses 3.1415926535898 for
p.