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Trigonometria (1657)

Oughtred · leaf 55

An illustration from Trigonometria, 1657, leaf 55
Log. fin, Z crurumBafis D C Z cru. + Bafis. 1Z cru. — Bafis. 2 Dim. 1 Log. fin.Dim. 2 Log. fin.+ 20.0 — fura.Eft duplex s co.? ang. B, DE MONSTRATIO. Defcriptis omnibus ficuc in fchematc, Erit triang. DBQ^cllipticum: ang. B quaeficus. Et in tri. K QJL, a Q. k fim.ang.Q=GiE=DB: ang. K=a^LD* = Bas.+… … Bemonft ratio 1*. InTrianguloQLKsQ. sK : ; |KL. IQ^L. IX, Rad :: ICLL. A K Rad. ^fiN :: Radq. iERq.(NamAiEViER, -fiN-fr)Quibus multiplicatis eric SQ; IL.£KL*sK«Radq.£Rq|sQy. lA,i«A^s«::Rq.a?Pq.- X.Ddtis Dtmtoftrttie.ll*. IntrianguloQA*SQ,. S x. : : 1 * A . K^A I a . Rad : : \ Q A . ae y. Rad. ae.y…

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