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# Title: Leibniz-Handschriften zur Militaria LH 36
# Folio 125r, page id 00068529:0251
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Res jam ed redit, ut datis lateribus tatis
quadrilateri, et basi una diagonali F
(quae est basis cormunis congruorum triangulorum)
autem non difficile est Recta PF si opus
producta secet circulos, contro P descriptum ins
Sed jam viteo nullis opus esse ambagibus
d. Datur angulus NpF, paulo ante inventus
et angulus Bes, quod in trangulo ert
rectanus i scilicet quam segmentum super
BC descrbendum capite debet seu = ang. BCd
datur ergo et angulus BPF. Ergo et ejus BB.
as Z dalo ro A qua est ad B P
invinlam, ut sinus ad radium.  ergo BD
inveniatur dingonalis altera Bd Hoc
et centro F descriptum in 1 Hinc
Bd = bis B3P. _ in sin. angs. B PF dsivis per radium
Eodem modo ad hac semel inverriri potest
Bd quia datur angulus NFP jam inventus est
et datur angulus HFB. Ergo et ang. BFP
et rursus fiet Bd = bis BF in sin ang. 13F p
civis. per rad. Unde patet esse BF: BP:: sings. anus BPF: sin ang. BFp
quod aliunde patet, sinus scilicet angulorum esse ut
iatera opposita
Quin et ad huc breviorem nam video
tn Datur angulus PBF hoc modo:
Ns si angulles ABC date, detrahatur a summadatorum
angulor FHtB AB HBF MBp du restat
angulus _ p BF qui proinde, est datus. Ergo
res comnis huc redit: datis at trianguli BPF
duobus lateribus PB et FB et uno angulo
FB p, invenire reliqua, sufficit autem
inveniri reliquos angulos, aut galtem eorum
unum, ut BPF, est enim quaesita Bd
ad ipsam Bp, ut duplyssinus anguli BpF, ad
Calculus
Constctiergo in summa huc redit:
radium.
dates triangulo ABC, et angulis ADB,
CDB quaeritur recta DB. Fiat ut
radius ad secantem complementi anguli AdB dati
ita dimidia AB  data ad B FB. Similiter
Fiat ut radius ad secantem complementi anguli
per calculum otrebraicum. Et notabilis CDB ita dimidia BC data ad PB.  sma porro summam
duorum complementorum anguli AdB et anguet cDB
deba et anguli erit angulus FBP iitaque
in triangulo FBP datur hic ingulus, et habetur
hic angulus, et duo circa ipsum latera _FB, PB
habentur habentur ergo et reliqua, adeoque et angulus BPF
BPF Et siet p ut radius ad temntan complementi
anguli BpF ita radius ad sinum anguli BpF
ita PB ad Bd quaesitam.
solat sed Geometricam ab Algebraicu
differentem solutione satis brevi
rem omnem placet de integro ordiri
et constructiorem pariter ac demonstrationem
Inventa jam per Analysius
per siuthesin dare.
en
differentia inter angulum ABC et