Texas Instruments TI-84 - Manual (Page 215)

Chapter 9: Split Screen 212
3. Press
o to display the Y= editor for
Par graphing
mode. Press
™ „ ¤ Í to store
cos(T)
to X1T . Press
ч ˜ „ ¤ Н to store
sin(T)
to Y1T .
4. Press
p to display the window editor. Enter
these values for the window variables.
Tmin=0 Xmin= L 2.3 Ymin= L 2.5
Tmax=360 Xmax=2.3 Ymax=2.5
Tstep=15 Xscl=1 Yscl=1
5. Press
r. On the left, the unit circle is graphed
parametrically in Degree mode and the trace
cursor is activated. When T=0 (from the graph
trace coordinates), you can see from the table on
the right that the value of
X1T ( cos(T) ) is 1 and Y1T
( sin(T) ) is 0. Press
~ to move the 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.
6. Press
y - and change
Indpnt to Ask .
7. Press
y 0 to make the table portion of the
split screen active. Press
† or } to highlight a
value you want to edit, and then enter a new value
directly in the table to overwrite the previous value.