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

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          <head xml:id="echoid-head159" xml:space="preserve">CHRISTOPHORI CLAV II</head>
          <head xml:id="echoid-head160" xml:space="preserve">BAMBERGENSIS</head>
          <head xml:id="echoid-head161" xml:space="preserve">E SOCIETATE IESV</head>
          <head xml:id="echoid-head162" style="it" xml:space="preserve">SINVS, VEL SEMISSES RECTARVM</head>
          <head xml:id="echoid-head163" style="it" xml:space="preserve">in circulo ſubtenſarum:</head>
          <head xml:id="echoid-head164" xml:space="preserve">LINEÆ TANGENTES, ATQVE</head>
          <head xml:id="echoid-head165" xml:space="preserve">SECANTES.</head>
          <head xml:id="echoid-head166" xml:space="preserve">PRÆFATIO.</head>
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            <s xml:id="echoid-s3685" xml:space="preserve">DICI vix poteſt, quantam in
              <lb/>
              <note position="right" xlink:label="note-111-01" xlink:href="note-111-01a" xml:space="preserve">Sinuũ vti-
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              litas.</note>
            rebustã Aſtronomicis, quàm
              <lb/>
            Geometricis, vtilitatẽ babeat
              <lb/>
            Sinuũ cognitio: </s>
            <s xml:id="echoid-s3686" xml:space="preserve">cũ innumera-
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            bilia peneproblemata Aſtro-
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            nomica, & </s>
            <s xml:id="echoid-s3687" xml:space="preserve">Geometrica ad
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            vſumper calculum & </s>
            <s xml:id="echoid-s3688" xml:space="preserve">rationem Sinuũreuocen
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            tur, vt tumex noſtris triangulis rectilineis, ac
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            sphæricis, tum ex Almageſto Ptolemæi, ex noſtra
              <lb/>
            Gnomonica, & </s>
            <s xml:id="echoid-s3689" xml:space="preserve">exalijs variorum Aſtronomo-
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            rum libris manifeſtumeſt. </s>
            <s xml:id="echoid-s3690" xml:space="preserve">Quare, cum à paucis
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            admodum Sinuum demonſtrationes ſint expli-
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            catæ, operæpretiũme facturum arbitror, ſi, quan
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            ta potero breuitate, ac perſpicuitate, ex varijs
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            auctoribus, præſertim ex Ptolemæo, </s>
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