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Trigonometria (1657)

Oughtred · leaf 42

An illustration from Trigonometria, 1657, leaf 42
CD major bafis BD eft Z cafuumS*D A-HB A- EtminerbafisDL eft Xcafuum = DA —BA.Item Z crur = D G: & X crur = DF: Eft autemBD. DG:: DF. DL. TumDB —DL = aBA. EtDB-BA = DAJ Deniquc CRBA::Rm.B EtCD. DA::Ri«. D. IX. Si vero demur duo latcra, cum angulo uni ipforum op-pofito, ut inveniatur vcl latus… … GAP. III. Tmngnlorum fthmcorwn calculus> & prirnode triangnlo re&angubfthmco. i!i<^^^^c^illnus hypotcnufarum, finibus cathetorum Samdircfie proportionates. R.fBC :: $B. *CA. 11. Sinus bafium, tangcntibus cathecorum font dire&epr©^portionalcs. R. sBA :: *B. tCA.quereR. f **B :;JCA.…

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