4-2 Parametric aplet
Set angle 
measure
3. Set the angle measure to degrees.
MODES
Select Degrees 
Set up the plot 4. Display the graphing options.
PLOT
The Plot Setup input form has two fields not included 
in the Function aplet, TRNG and TSTEP. TRNG 
specifies the range of t values. TSTEP specifies the 
step value between t values. 
5. Set the TRNG and TSTEP so that t steps from 0° to 
360° in 5° steps.
 360 
5  
Plot the 
expression
6. Plot the expression.
 
7. To see all the circle, press   twice.
 
HP 39gs English.book  Page 2  Wednesday, December 7, 2005  11:24 PM