DEPARTMENT OF COMMERC!
U. & COAST AND GEODETIC SURVEY
Form 665
wn
Ed. Dee. 1920
hom,
o
TRIANGLE COMPUTATION USING TWOSI DES
‘oO
tome
<
j
[tan
(45°4-¢)
a
OL no
AND INCLUDED ANGLE
ran @ tan 4 (A,+ ,):
_
asin O|*
="
*
.
D
3
da ..
ZS
@ &
C;
Sph. excess
é¢
ee
o 8
Cs
wt
moa
=a.
7
o—
=
beg
bag
re
ome Bo
4 Cp
90°—340, =4(A,~-B,)
eS
-
ap
~ e
Sum-—= Ay
.
Lt
’
ae
aa
map
Cs
nts
<
5
.
.
,
__
Diff= B,
Cy
=
te
:
\
i
Log a
ZB @2rer
.
PF 26
-
Log a
‘
n
.
28.62
ag ee’
GEFs
Ios
Cow gt
Fy Gs
os
woe
4
Log 6
Log sph. ex.
,
6”
soy,
(Sketch)
sag!
Log sin C,
-T3g8"
-
42 3 =
«Take free Prec nus Cenap.
aK
4
—Ee Hum
a
Log m
35764%
és
ry
GIS
Rew
S
Fey
.
2°
aD
lr
ge
a
se
Log sin ©,
,
24 ba ros
7.
o
~
£2
6
wn
=
Law ta
‘
ge ee ee
eg ee?
dc
ww
967
weg
my
==
= &
Oo
ne.
ras
¥
at agi 3
caren
L
I sg
Colog sin A,
Log ¢
3
at algae! Jana eve fras?
OP Oe
C2 $109
Lxcere fre a
CHECKCOMPUTATION
TF ?
SaaS
i
No,
STATION
{SS SSS SS
4
2
3
me iit
.
.
SPHERI ‘A,
ai
\
oN
Lt
|
8S SEE
SpHERICAL
Cc.
4
8B
I
+| An
vO
-
:
a
AND DISTANOE
,4
:
4a
=
+
a,
a
1
‘
t
”
x
17o
“Li
eo
Te LEAS
Me
at
te
“
a
1
é
nO
r
uh
-
1-3
va
LOGARITHN
6 OF EF.
4,
a
Se
PLANE ANGLE
EXCESS
'
2-3
1
ep
#82
w2
3B.
3, 7O8
39277
10.770
2651/4
[9 sw¥3
VISE”
-
cf ern,
Of
oe as FILSK 4IO EFF? ©
ta,
3.622 oF oF
7)
1-2
“wa
;
“
-
Fr.
wy
Pen
va
SEF
BSS
“wr
2-3
i
1
iow?
a
a fet a
.
a
‘
op qed
€
|
(@pycl®
“
,
eZ
ee
*The subscript
* We O. GOVERNMENT PRINTING OFFICE
V8
dhe
‘eager Dh?
at
8 Meetadiaifdier ALEGycome gS|
i
1-3
:
4
o
3
ped
Ry FF og a of Ya
Bat Reve foae
ON Ces hoe,
: