HP -65 Owner's Handbook Manual page 43

Press See Displayed Comment
= X
120 [ENTERA X 0
8 aae r
&
-
x coordinate.
.
-
y coordinate.
Sample Case: Rectangular to Polar. Convert rectangular coordi-
nates (x=4, y=3) to polar form with the angle expressed in
degrees:
Y
38 @,3)
Press See Displayed Comment
- x coordinate.
il 5.00 r (magnitude).
9 36.87 0 (angle).