Calculator User Manual

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 ÷ ˜ „ ¤ Í to store sin(T)
to
Y1T.
4. Press p to display the window editor. Enter
these values for the window variables.
Tmin=0 Xmin=L2.3 Ymin=L2.5
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.