HP 25 User Manual

Function Keys 71
to give the vector of the actual ground speed and course .
150 knots
45
0
j
course ~ ~ A'
o o 'L
o
--~ ~ Actual ground speed
~ : ~ 40 knots
__ ~ _____ ~ _____ 90°
Press Display
a ~
I 0.00
Clears storage registers. (Display
assumes no results remain from
previous examples.)
m ~
I 0.00
Sets degrees mode.
45miim
1 45.00
() for the Swordfish instrument
vector.
150
I 150.
r for the Swordfish instrument
vector.
a ~
106.07
Converted to rectangular coordi-
nates.
fm
1.00
Instrument coordinates accum-
ulated in storage registers R4 and R
7
•
25 miim
I 25.00
() for wind vector.
40
I 40.
r for wind vector.
a ~ I 36 . 25
Converted to rectangular
coordinates.
a lE]
I 0.00
Coordinates for wind vector
subtracted from coordinates for
Swordfish's instrument vector.
-
4
89 .16
Recalls sum ofy-coordinates from
-
register R
4
.
7
69.81
Recalls sum of x-coordinates from
register R
7
•
(Sum of y-coordinates
lifted to Y -register.)
m ~
113.24
Actual ground speed of the
Swordfish
in knots.
aD
51. 94
Course of the Swordfish in
degrees.

HP 25 Specifications

General

Power Source	Rechargeable battery pack
Programming Steps	49
Release Year	1975
Functions	Trigonometric, logarithmic, statistical
Type	Scientific
Dimensions	148 x 80 x 14 mm