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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 806933011:0847
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supposed 10 be autus  d ETtele, the oisser
Les villbe the Tansent of the opposite Anole, or
of the nzle at the Centre; and the Trpoihenuse
will be the. Secant os that Ansle: Dut if jou ima-
sine the Trpodenuse to be the Radius of a Circle,
then each Leg vill be the sine os its opposite angle-
or of the Ansle at the Centre; as is plain front
the adjonin eures.
canc ot che same Angle.
the CenTreC.
sire Anste ac C Cenrre. And,
Sine ot is oppolice Ansle c.
En a Rieh anele Triansie, is either of ihe Lezs be
In ihe sirst oF wohich, B (che Bale) beins made TheC alculationof thé Seven C eses os Risht-
anele Plain Friangles.
CASF +
Given B. a. and b. Required PD
Canon (R: B: : F: b: P3
R = 10.
B = 2. 88536+2 = 768
C, = 9, 6197205 = 22 371
P = 2. 5050817 = 320 = Pd
Thie Generat Kule For all Operarions in Frigo.
nometry; 15, 10 lrice donn che Numbers found
in che lables accordins to chie Order ot the Ca
non: And ilen addins cosecher the second and
chird Numbers, trom cheir Sum substract the Art
che Remainder is ihe Losarirtm oC chie Jerm
By Gunter S Line.
Extend che Compalses trom 45 Degrees on che
Tangents, 10 22 Degrees 37 Minutes, the same
Eacent will Cach in che Line oF Numbers FO
CASE II.
Civen B, a, b. Required Fd
5, a: B: : R: L+
S, a = 9. 9652480 = 670 23
B = 2. 8853612 = 468.
2 = 10
the Radius, P (the Perpendicular) is the Pangene
ot the Ansle ac a, the Cenrre of che Circle, wtich
is opposice 10P, and ct Lnase, is the Sc-
In the lecot Ligure, wrhere P is made che R a-
dius, B is che Tansent of che opposire Ansle ac
In FhCHId FIgure, Where FTFhC FES DOLIICHUIE IS
made the Radius, P is the righe Sinc ot the oppo-
In che Courch Figure, E beins also made Radi-
uS, bur C the Centre ot che C ircle, B Will be che
ouett.
766, backivard 10 320.
B9 296L (C. 2. 
2B, a, b EI
S, an B:: R : FI (0,
B B, HI(V V HI : R :: B: 5, a cv: bV
A B, II P E: R:: B: S, a which cinds
Then R. T. B:: B: P chic Va,
OrR: B:: T. b: P
BB: P V V B: R:: P: F: b cV: V ~
6 B: P E . B: R: : P: F: b Dy che last.
ThenS: bP:: R: II cV:
Latite Lal bot ECdea L1O 166, lD B32 On EhtC
Hi paiter
As A B lR: H: : 5, a: B b~NCY
The Seven Cases os Plain Frianeles.
Girem
Otren, qui
Proxortion.
6y Cuncer s Scale.
H2 = 2. 9201132 = 832 = Ht.
Fxcend che Compases AOMM 8y DESTCCS 23 MII.
nuTeS, 10 90 Degrées on the Line ot Sines; the