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# Title: Lexicon Technicum: Or, An Universal English Dictionary Of Arts And Sciences (shelfmarks Leibn. Marg. 71; ZEN Leibn. Marg. 71)
# Folio - , page id 806933011:0854
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LOHHC
and b arc. 1
5, c. C
ruse c is also knOv
:: 5, b. 12
Cctacion.
5, c = 9. 9656153 = 67 501
O = 1. 7118072 - 3l. 3 LHIC.
5, b = 9. 8494850 = 45
Sum = 21, 5612922
EI = 1. 5956769 = 39. 4 Miles.
And 20 Eind B, vou may lay.
155, b. FF: : 5, a. 20B:
50, b. .: Sy a. t0B.
P Ball sire buc one Instance more in this mar-
Suppose a Ship Sail 5. S. NV. 50 Leagues, anet
Supvose a Ic
Feighe rou wouldcane, butcan mea
than From c’r0b, bue knou the Lensch B, is =
100 Vards.
Hlere rou can tatre che ABC a b G, vich vour
Ouacrant, and consequels che Crule Conrisu
ous one, ob a, is knoirn.
The Angle cis Hnoun atter che same was vy che
Instrumene: Wheretore having in che OBcure An
Bled Friangle FIOB, che Base B, ana the An-
Sles cand b, rou may Aind Oby Case 3. 6 Oblique
Plain Triangles: FOr, since c al D are kno
tnown. Theretore la),
Whose
Caret
3c. 25 aC
their Sum subtracted trom 180, Will leare ca b,
Bid
hen VV. by N. 64 Leaoues. Wiac nas hec direct
Courle, and what is her Dutance trom the elace
Me vent Lcom 3
cer, vrtrich is this.
55; a. B.. 0. l. .
And wohen it is thus Ron Ox Found, h
nuse O, and ihe AHSt
the Righr. anoled Frianele, b a G, che Hyporhe.
Ao L2. .. Su b. A 6.
Ehe Alcirude ot che Torer Coushr.
BD, Wrhich imagine ro be che Distance betveet
n Enemies Cier or Camp; and that because ot
By Case che ych ot Rixhe.ane led Trianoles.
Thiraly, Suppose an Tnaccessible Distance,
EivO FOTIO, BalcI, 66. OI inC Man OL LIe 0
Line GC, buc can measure trom G EOC, and aF
BCC. Chis premiled, which is easilys done by
Pesse Inctrument.
CHC LAMIEIOII OC. VOU CaII DO HD HCater chanthe
cach Scarion cake Angles wich an Instrument.
Llavins caken chen by che Theodolire, (90. che
Angles CC B, dna C CrL, ana meatured ll
And also harins caken che Angles COD, and
Lo Ptot ihe Cale
Distance chereon Cu = 50 Lcagues, Hom 
5I: And on the les tl, let 64 Leagues, then
Dravins che dide a c, che lriansle will be
Formed.
the Ansle a, ard chat Anole siren. And chis 15
Case 4. ot Plain Oblique Triansles.
nomerry to the Mealurins or naccestible Mlatceo
inlo loce. ae Larel; lce stactle dn rou1 alolide tilbe l vl. s catieor,
catie.
Tet b De The Place From whence che Ship Pailec,
and let B reprelent the S. S. W, Rumb, and etie
Then, MCC Ihe tirst Cour(C WAS LWVO POIE, ana
the second seven Points From the Meridian, make
an obtuse Ansle al b, equal 1b G LOIHIS, OF 1OY
In wwhich rou lare civo Less, LL and B Formins
Secondly, TF rou would appIr ehis Part OF Triso-
Tou have in che Friansle C BG, che Side C6,
aa C Cnd tllteo c ailet et. Mlalt