Theodosius <Bithynius>; Clavius, Christoph
,
Theodosii Tripolitae Sphaericorum libri tres
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1 - 30
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181 - 210
211 - 240
241 - 270
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301 - 330
331 - 360
361 - 372
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cus reliqui iam noti facti ſunt. </
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<
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vel 55. huiꝰ.</
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inuentionem, arcus AB, recto angulo oppoſitus, cum arcu BD, circa re-
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ctum angulum:
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</
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<
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xml:space
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">VEL, quia datus eſt arcus BD, circa angulum re-
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huius.</
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ctum, vnà cum angulo non recto B, ei adiacente:
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</
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<
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xml:space
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">VEL certe, quia datus eſt arcus AB, angulo recto
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huius.</
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oppoſitus, cum angulo non recto B;
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<
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">reperietur, per ſcholia in margine adducta, angulus quoque BAD: </
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<
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plicatus totum angulum BAC, quæſitum efficiet cognitum.</
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<
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<
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ſolos ſinus,
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quãdo duo
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anguli dati
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ſunt æqua-
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les.</
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ſcholij propoſ. </
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">ex arcu BD, circa angulum recturn dato, & </
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<
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lo B, ei adiacente dato, inueniemus angulum BAD, qui duplicatus totum
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angulum quæſitum BAC, dabit. </
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<
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lij propoſ. </
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poſito iam inuento, eruemus ar cum AB, recto angulo oppoſitum, ideo{quam}
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& </
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<
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">arcum AC, illi æqualem. </
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liqui anguli B, dati non recti.</
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<
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cum arcu ipſis adiacente; </
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<
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<
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<
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ſi duo illi ex duobus rectis tollantur. </
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qua latera per propoſ. </
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rectanguli, cum arcu, qui alteri illorum opponi-
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tur; </
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<
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<
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dato oppoſitus maior ſit quadrante, an minor, aut
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certe quadrans.</
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anguli dati
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inæquales
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sũt, & arcns
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datꝰ qui v-
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ni eorũ op-
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ponitur, nõ
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quadrans.</
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<
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">IN triangulo ABC, non rectangulo dati ſint duo anguli B, C, cum ar-
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cu AB, qui angulo C, opponitur, conſtetq́ue, an arcus AC, maior quadrante
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ſit, minorve, an quadrans. </
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angulum BAC, inuenire. </
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<
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