Texas Instruments TI-86 Manual Book page 390

378
Chapter 20: A to Z Function and Instruction Reference
ZTrig
† GRAPH ZOOM menu
ZTrig
Sets the window variables to preset values appropriate
for plotting trig functions in
( @ x =p/24), and then updates the graph screen.
xMin=L8.24668071567
xMax=8.24668071567
xScl=1.5707963267949 (p/2)
Radian angle mode
yMin=L4
yMax=4
yScl=1
In graphing mode:
Func
y1=sin x b
ZStd b
ZTrig b
Done