Texas Instruments TI-83 Manual Book page 250

3. Press o to display the
graphing mode. Press ™ „ ¤ Í to
store
cos(T)
to store
sin(T)
4. Press p to display the window editor.
Enter these values for the window variables.
Tmin=0
Tmax=360
Tstep=15
5. Press r. On the left, the unit circle is
graphed parametrically in
trace cursor is activated. When
graph trace coordinates), you can see from the
table on the right that the value of
and (
1 Y sin(T)
1T
cursor to the next 15 angle increment. As you
trace around the circle in steps of 15 , an
approximation of the standard value for each
angle is highlighted in the table.
TI-83 Plus Split Screen
Y=
. Press ˜ „ ¤ Í
to
X
1T
to .
Y
1T
Xmin=L2.3
Xmax=2.3
Xscl=1
Degree
. Press ~ to move the
) is
0
editor for
Par
Ymin=L2.5
Ymax=2.5
Yscl=1
mode and the
(from the
T=0
(
X cos(T)
1T
) is
247