DEGREE, 
Brengne = pa 53 = 0.9983051 
R" - - pe Hee 
Co. log. ¢ - 2.0754633 
Log @ - 2.8913042 
Cof.z  - - 9.9886204 
759".446 - 2.8799246 
578260 
= $ ead "4.68557 
Sin,? z - 8.70794 
Tang. L - 0.05850 
O17 - 9-23.46 
Its £ aS = 0.08 + 758”. 446 = 758”. 5 Bigs! multiplied by 
1.0026 = (1 + ¢* col.” L) is the e difference of lati- 
aes = er 4 = 12’ 40".49; andt ier a fubtraGied 
from 48° ps 49".7 7 = latitude of A) leaves the latitude 
of B= 4 8! 
Example II. 
Let AB, the dire& diftance of Dover-caftle from Green- 
wich, be 328231, its naires a 67° 44'34"S. E.; required 
the latitude of Dove 
Firft find @ = eRe : 
“normal 
Log. Ke - - - 5-5161823 
R’” 53144254 
Co. log. 7 (x + he 2 fin? L)) *2.6786812 
Leg. @ - . . - 3-5092886 
Col. x - ef = — 9-5783707 
@ cof. 2. = 1223”.64 - - 3.08 76593 
Log. 9 -  — 3.5092886 
¢° : : 70185772 
ote of Sin, 1” - = 4.6855749 
Sin. x - ee 9327456 
Tang. L - - 0.0990500 
Log. 0.5 - - - 9.6989700 
io fin. > fin. z tang. L = 27.%22 = 1.4349177 
Ss + ay 22 = Aaa 86 its 
- 340972089 
1 1 te é cof? L=t. a) 
Fable f x)= 0.00T0054 
Difference of latitude 20’ 53”.73 = 
1253-73 = “ . 3-0982143 
bees taken from the latitude of Greenwich, leaves aed 
46" 
In 
part of ie formula of Delambre is not fufficien vie vee 
" Inftead of tang. L, we fhould bien tang. L’, 
of the point AN, ; aad for greater exaCinels, the in ‘of ie 
ery large triangle, as in a example, the fecond 
two correGtions fhould a Peassie by yee ae 
(1 + 2 cof L + 3 . di, fin. L, co fy ta) 
Table IX. 
If the tang. L’ be taken, the fum of the two corre¢tions 
is 1223".64 +2 6" a = 1356 
Log. 1250. 3-0970941 
1002319 = @ " cof.2 L, Tab, Vit 
.009026 = 2 fin. d L, Tab. 1X 4.701428 
2002345 
ace ar 
Cor. 2".93 « 0.4672369 
This is to be added to oa 
eae = 20" §3”.46 = the 
difference of latitude eae 
Example IIT. 
Given latitude A, (Dunnofe) = 50° 3%! 9¥ 
AB= haved ma 2 1479235, 
a = 20° > 58) Oo” 
Required eae (Butler. hilt ? 
Log. j= . : = 3.1410338 
Cof. z - - = 99702169 
1291.97 = 3-1112g507 
og. F - - = 6 2820676. 
Sin. 1” - - = 4.6855749 
Sin.? Z - - = 9.1077604 
Tang. L - - = Ocgi2864. 
Log. 0.5 : - = 9.6989700. 
0.733 = 9.8656683 
1297” 97 $07.43 = 3291! 3.TI LOOSE 
cof? L, &c. Tab. VII. a tx, oe 
Correction - g"I4t = 0.497149% 
Which aeace to 1291.24, ence the se of latitude reo. 
quired 38 
_— = nu 34 38 
Example IV. 
Let A, latitude of Dunnofe = 50° 3%! 87, 
7 — 81° 50’ 53" 
A B = 339398. 
Required the latitude of B, Beachy-head ? 
Log. - = 5.5307092 
= Ot 79931255 
Log. - = 3.5238347 
CoilZ - -- 9-1463479 
467.93 = 2.6701826 
Log, 
