Texas Instruments TI-80 - Page 63

Math, Angle, and Test Operations 2-15
Note: When converting from one coordinate system to the
other, be sure that the angle mode setting,
DEGREE
or
RADIAN
, is appropriate for your angle measurements. (Press
3
to check the current setting.)
R
8
Pr(
(
ANGLE
, item 3) converts the given rectangular
coordinates to polar coordinates and returns
r
.
R
8
P
q
(
(
ANGLE
, item 4) converts the given rectangular
coordinates to polar coordinates and returns
q
.
Both
X
and
Y
can be lists.
R
8
Pr(
X
,
Y
)
R
8
P
q
(
X
,
Y
)
RADIAN
Mode
P
8
Rx(
(
ANGLE
, item 5) converts the given polar coordinates
to rectangular coordinates and returns
x
.
P
8
Ry(
(
ANGLE
, item 6) converts the given polar coordinates
to rectangular coordinates and returns
y
.
Both
R
and
q
can be lists.
P
8
Rx(
R
,
q
)
P
8
Ry(
R
,
q
)
RADIAN
Mode
R
8
Pr (
R
8
P
q
(
P
8
Rx(
P
8
Ry(