Texas Instruments TI-89 Manual Book page 432

AndPic
CATALOG
AndPic picVar[, row, column]
Displays the Graph screen and logically
"ANDS" the picture stored in
current graph screen at pixel coordinates
(row, column)
must be a picture type.
picVar
Default coordinates are (0,0), which is the
upper left corner of the screen.
angle()
MATH/Complex menu
angle(expression1)
Returns the angle of
expression1
Note: All undefined variables are treated as
real variables.
angle(list1)
angle(matrix1)
Returns a list or matrix of angles of the
elements in
element as a complex number that
represents a two-dimensional rectangular
coordinate point.
picVar
.
expression
, interpreting
expression1
as a complex number.
list
matrix
or , interpreting each
list1 matrix1
In function graphing mode and Y= Editor:
y1(x) = cos(x) C
2 ˆ Style = 3:Square
and the
TI-89:
ˆ Style = 3:Square
TI-92 Plus:
„ Zoom = 7:ZoomTrig
ƒ = 2:Save Copy As...
Type = Picture, Variable = PIC1
y2(x) = sin(x)
2 ˆ Style = 3:Square
TI-89:
ˆ Style = 3:Square
TI-92 Plus:
y1 = no checkmark (F4 to
deselect)
„ Zoom = 7:ZoomTrig
"
TI-89:
¥"
TI-92 Plus:
AndPic PIC1 ¸
In Degree angle mode:
angle(0+2i) ¸
In Radian angle mode:
angle(1+i) ¸
angle(z) ¸
angle(x+ iy) ¸
In Radian angle mode:
angle({1+2i,3+0i,0ì4i}) ¸
Appendix A: Functions and Instructions
Done
90
p
4
415