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Graphing The Unit Circle And Trigonometric Curves - Texas Instruments TI-82 STATS Manual Book

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Graphing the Unit Circle and Trigonometric Curves

Problem
Procedure
17–10 Applications
Using parametric graphing mode, graph the unit circle and the
sine curve to show the relationship between them.
Any function that can be plotted in
mode by defining the
Par
component as F
.
(T)
1. Press z. Select
2. Press p. Set the viewing window.
Tmin=0
Tmax=2p
Tstep=.1
3. Press o. Turn off all functions and stat plots. Enter the
expressions to define the unit circle centered on (0,0).
4. Enter the expressions to define the sine curve.
5. Press r. As the graph is plotting, you may press Í
to pause and Í again to resume graphing as you watch
the sine function "unwrap" from the unit circle.
Note: You can generalize the unwrapping. Replace
any other trig function to unwrap that function.
mode can be plotted in
Func
component as
X
,
, and the default settings.
Par
Simul
Xmin=L2
Xmax=7.4
Xscl=pà2
and the
T
Y
Ymin=L3
Ymax=3
Yscl=1
sin(T)
Y
in
with
2T

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