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Linea 120:
ergo <math> b \approx 45,32 </math>
===Triangulum generale===
Cogniti sint unius trianguli:
*latus <math> c = 100 </math>
*anguli <math> \alpha = 50^\circ </math>, <math> \beta \beta = 30^\circ </math>
Computa longitudines <math> a, b </math> atque magnitudinem anguli <math> \gamma </math>
Hoc ad peragendum, lex sinus usurpari potest:
<math> \gamma = 180^\circ - (\alpha + \beta) </math>,
ergo <math> \gamma = 100^\circ </math>.
Lex sinus:
<math> \frac{c}{\sin{\gamma}} = \frac{a}{\sin{\alpha}} </math>
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