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HP HP-25 - Page 75

HP HP-25
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to
give
the
vector
of
the
actual
ground
speed
and
course.
0°
25°
~——
40
knots
150
knots
—.45°
1
Coursé\
.
N
X
|
-
b—————
Actual
ground
speed
.
90°
Press
Display
B
Clears
storage
registers.
(Display
assumes
no
results
remain
from
previous
examples.)
B8
Sets
degrees
mode.
45
6
for
the
Swordfish
instrument
vector.
150
r
for
the
Swordfish
instrument
vector.
B
Converted
to
rectangular
coordi-
nates.
1.00
Instrument
coordinates
accum-
ulated
in
storage
registers
R,
and
R;.
25
6
for
wind
vector.
40
r
for
wind
vector.
BER
Converted
to
rectangular
coordinates.
B
Coordinates
for
wind
vector
subtracted
from
coordinates
for
Swordfish’s
instrument
vector.
4
Recalls
sum
of
y-coordinates
from
register
R,.
7
Recalls
sum
of
x-coordinates
from
register
R,.
(Sum
of
y-coordinates
lifted
to
Y-register.)
B
Actual
ground
speed
of
the
Swordfish
in
knots.
o
Course
of
the
Swordfish
in
degrees.

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