286 Appendix A: Function and Instruction Reference
73A-ENG.DOC AppxA: Function/Instruction Reference, English Julie Hewlett Revised: 07/29/98 1:10 PM Printed:
05/19/99 9:03 AM Page 286 of 36
CoordOff
CoordOn
-g
WINDOW format settings; turns off or on cursor
coordinates so that they are not displayed at the bottom
of the graph.
cos(value)
-uTRIG
Returns the cosine of a real number, expression, or
each element of a list. Results are determined by
Angle mode setting (Degree or Radian).
In Degree mode:
cos(45)
b.7071067812
cos ({0,60,90})
b
{1 .5 0}
In Radian mode:
cos(
p/2) b0
cos ({0,
p/2,p}) b
{1 0 L1}
cosL1(value)
-uTRIG
Returns the arccosine of a real number, expression,
or each element of a list. M1value 1. Results are
determined by Angle mode setting (Degree or Radian).
In Degree mode:
cos (1) b0
cos ({1,0}) b
{0 90}
In Radian mode:
cos (.5) b1.047197551
cos ({0,.5} )b
{1.570796327 1. ...}
Degree
.
Selects the Degree Angle mode setting. Interprets
angles as degrees.
In Degree mode:
sin(90)
b1
sin(pà2) b.0274121336
DelVar variable
8CTL or -|
Deletes the contents of variable from memory. You
cannot delete a program or a system variable.
PROGRAM:DELVAR
:{1,2}ÜL1
:Disp L
1
:Pause
:DelVar L
1
:Disp L
1
:Pause
ERROR 14: UNDEFINED
DependAsk
-f
Selects the Depend: Ask TABLE SETUP format setting.
The user must highlight a dependent variable (Y)
space with the cursor, and then press b to view
the value.