Theodosius <Bithynius>; Clavius, Christoph
,
Theodosii Tripolitae Sphaericorum libri tres
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AB. # AC. # C. # # B.
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13. # 20. # 59996? # fit # 92302.
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<
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<
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<
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<
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tus fuerit, vt in priori triangulo: </
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<
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ri, grad. </
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<
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<
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<
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<
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tuſus, & </
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<
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<
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<
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">eundem ſinum habeant, vt ad deſini-
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tiones ſinuum demõſtraui-
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mus. </
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<
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bus angulis C, B, ex grad.
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</
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<
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triangulo angulus A, grad. </
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75. </
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vero grad. </
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tus autem BC, inuenietur,
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per auream regulam, par-
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tium ferè 21. </
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<
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gulo; </
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ferè 11. </
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<
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">quòd ſit, vt ſinus anguli C, ad ſinum anguli A, ita latus AB, ad la-
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tus BC. </
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C. # A. # # AB. # # BC.
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59996. # 96923. # # 13? # fit # 21. ferè.
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# # Item
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C. # A. # # AB. # # BC.
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59996. # 50779. # # 13? # fit # 11. ferè.
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<
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">ITAQVE, ſi fiat, vt latus datum dato angulo oppoſitum ad al-
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terum latus datum, ita ſinus dati anguli ad aliud, reperietur ſinus, cuius
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arcus dabit angulum alteri lateri dato oppoſitum, ſi acutus fuerit, (quod
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quidem ſemper contingit, quando datus angulus eſt obtuſus) aut certe ex
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ſemicirculo ſublatus dabit illum angulum, ſi obtuſus fuerit: </
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ro ex dato angulo, & </
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exhibebit tertium angulum. </
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tertij anguli à datis lateribus comprehenſi, qui vltimo inuentus eſt, ita
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latus datum dato angulo oppoſitum ad aliud, producetur tertium latus.</
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<
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<
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<
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portio duo
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rum laterũ
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datur.</
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ſi lateribus illis numeri proportionis aſcribantur,
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eodem modo problema exequemur.</
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<
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52. </
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<
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in priori triangulo. </
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<
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culari AD, quæ intra triangulum cadet: </
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<
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ſecundi.</
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in triãgulo rectangulo ACD, poſito ſinu toto AC,
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recta AD, ſinus eſt anguli dati C, vt in tractatu ſi-
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nuum docuimus; </
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<
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latus datum, ita AD, ſinus dati anguli C, ad aliud,
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reperietur AD, 12. </
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<
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