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HP-41C Handbook
Fold Out
Contents
Introduction
Getting Started
Display Control
Memory Stack
HP-41C Functions
Storing Recalling
Functions
Functions cont.
Programming
Program Editing
Prg Interruptions
Prg with ALPHA
Branch. Looping
Subroutines
Ind. Operations
Flags
Flags cont.
A
-
B
-
C
-
D
-
E
-
F
-
G
Index
Function Index
Back Label
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©Hewlett-Packard
Section 6: Functions
95
Keystrokes
Display
XEQ
XEQ _ _
ALPHA
RAD
ALPHA
0.0000
Radians mode selected.
3
ENTER
3.0000
The y-coordinate is entered into the Y-register.
4
4 _
x-coordinate keyed in.
g
R–P
5.0000
Magnitude r.
X
Y
0.6435
Angle θ in radians.
Now convert polar coordinates (8, 120 grads) to rectangular coordinates.
Keystrokes
Display
XEQ
–
XEQ _ _
ALPHA
GRAD
ALPHA
–
0.6435
Grads mode selected. Displayed result remains from previous example.
120
ENTER
–
120.0000
Angle θ is placed into the Y-register.
8
–
8 _
Magnitude r is keyed in.
g
P–R
–
2.4721
The x-coordinate.
X
Y
–
0.6435
The y-coordinate.
XEQ
–
XEQ _ _
ALPHA
DEG
ALPHA
–
7.6085
Returns the HP-41C to DEGrees mode.