Wel EE bhai ae Hee
te
DEPARTMENT OF COMMERCE
U.S. COAST AND GEODETIC SURVEY
Form 665
Ed. Dec. 1929
TRIANGLE COMPUTATION USING TWO SIDES AND INCLUDED ANGLE
Tt
= tan (45°+
o°+¢)
bh
}
7
Call loncer
“ic
(Call
longer sic
0
C,.
1.
tan 4 Ci,
3
Co
47h
3 C,
gs
oS
ws ~)
= sin Cy |*
sin A,
Log a
Soy
geet
Log m
Lio A
.
7663
Log sin Cy
wot)
FOOD
Log a
5
C2 “4eg
Log b
on 83
Log sph. ox.
fer tan 4h
ies
poe
oy
44
.
OF
LF
se a
EAN ND
“+4 8SD ar¥3
Sum=A,
Op
¢6
ew ex Lor tantf
bow eKGE
‘
.
=
Pif=2,
Oy
fe
;
pany *
:
et tan,
1
ey
SK
Fo aF
t
(Sketch)
u
=
og (A,—#,)
2:
*
~ rs
Pp
af
|
o
af
7c
4 Fo
.
a
3 Log a
*
3 Log sin Ch
a. FLY
Go/77
re
Bear
| Colog sin Ap
9 977
FR ox
Log ¢
ree)
.
f
.
co
pee
No.
tO a
STATION
beee er Se
+
voy
ae
xi
4
_
2-3
|
wee se
4
%
x
E
STAC Hes ak BASE Lae
q
Cee Mos AECBY~ PCE)
pp nee et eee
hhHERUOCAL ANGLE
SoHERICA]
-
4
See
PRANESaoucte
moe
LOGARITHM
meee ne cedee
G3 .F FR
loe
—
iM
o
= ie
A ee ee
2.96 F
BS7S~
(71 tt co
16.622 2SIS
3
O82 f497
F ASK
EF73
A
C2 $6 SF OF
|\F 22
O64
1-3
2 050
7oeY
1-2
(2 Pre
LBS
a
wo
cee
cece
2-3
1
3
1-3
1-2
*The subscripts 8 aid; o° this form refer to sphencas ai ane augles respectively.
G. @. QOVERNMENT PRINTING OFFICE
- po-—48342-1
Q:
e
‘
CHECK COMPUTATION
ene
9
so
f
3/.9€F7
= 78
:b
ph. excess
2 F6G FE 76
c
==
-
who
¢
:
.
Ad
B0°—30,==3}(Ap4- Bp)
y
4 1B):
tan ¢@ tan 4 (ct,+8,):
ee
Sph. excess
SP
excess
3h
-#)
TE
w
|