User's Manual

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)
-u
TRIG
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)
b
0
cos ({0,
p
/2,
p
})
b
{1 0
L
1}
cos
L
1
(value)
-u
TRIG
Returns the arccosine of a real number, expression,
or each element of a list.
M
1

value

1. Results are
determined by Angle mode setting (
Degree
or
Radian
).
In Degree mode:
cos
(1)
b
0
cos
({1,0})
b
{0 90}
In Radian mode:
cos
(
.
5)
b
1.047197551
cos
({0,
.
5} )
b
{1.570796327 1
.
...}
Degree

.
Selects the
Degree
Angle mode setting. Interprets
angles as degrees.
In Degree mode:
sin(90)
b
1
sin(
pà
2)
b
.0274121336
DelVar variable

8
CTL
or
-|
Deletes the contents of
variable
from memory. You
cannot delete a program or a system variable.
PROGRAM:DELVAR
:{1,2}
Ü
L
1
: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.