Texas Instruments TI-83 Plus Manual Book page 37

Setting
Float
Radian
Real
4. Select
screen.
TI-83 Plus Polynomial Root Finder / Simultaneous Equation Solver Application
0 1 2 3 4 5 6 7 8 9
Degree
a+bi re^ i
to save the settings and return to the previous
ESC
Description
Float (floating) decimal mode displays up
to 10 digits, plus the sign and decimal.
0123456789 (fixed) decimal mode
specifies the number of digits
(0 through 9) to display to the right of the
decimal.
Radian mode interprets angle values as
radians. Answers display in radians.
Degree mode interprets angle values as
degrees. Answers display in degrees.
Real mode does not display complex
results. If you select this mode setting and
the answer is complex,
displayed as the result.
a+bi (rectangular complex) mode
displays complex numbers in the form
a+bi.
re^6 6 i (polar complex) mode displays
complex numbers in the form of re
is
NONREAL
i
.
Page 37