Theodosius <Bithynius>; Clavius, Christoph, Theodosii Tripolitae Sphaericorum libri tres

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338326 13. dat AB, ſinum totum partium 100000. quid dabit BD, 5? inueniemusq́
ſinum
BD, 38461.
vt hic vides.
11
AB
. # AB. # BD. # # BD.
13
. # 100000. # 5? # fit. # 38461.
Ex tabula ergo ſinuum dabitur angulus BAD,
183[Figure 183] grad.
22. Min. 37. atq; adeo eius complementum
B
, grad.
67. Min. 23. qui eſt vnus angulorum quę-
ſitorum
.
Rurſus, quia poſito AC, ſinu toto, CD,
ſinus
eſt anguli CAD, dicemus iterum per regu-
lam
auream.
Si AC, 20. dat AC, 100000. ſinum
totum
, quid dabit CD, 16?
Inueniemuſq; ſinum
CD
, 80000.
Vt hic patet.
22
AC
. # AC. # CD. # # CD.
20
. # 100000. # 16? # fit # 80000.
RVRSVS in poſteriori triangulo datum ſit latus AB, 11. AC, 13. &
BC
, 20.
Demiſſa in maximum latus BC, perpendiculari AD, inuenietur
ſegmentum
BD, 8 {4/5}.
at CD, 11{@/5}. vt hic apparet ſecundum praxim poſte-
riorem
propoſ.
9.
44
BC
. # AB. AB. # Differ. inter # AB, AC.
20
. # 24. # 2? # fit # 2 {2/5}.

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