. But by the firft Section, As the fquare of the fine of the fumme of B and E ;Is to the reUangle made of the fumme and difference of the fines ; So is the fquare of the tangent half B E;To the reti angle made of the tangent bMf fumme, and half difference of the (ides. Therefore,As the fquare of… … vK, Trigonometria Eritannica. 69 And alfo , As the fine of the fumme of the angles B and E ; Is to the difference ofthei lints; So is the tangent ofhalfe the bafe B E , To the tangent of half the difference of the fides B A> and A E. But, As the fine of the half fumme of B and E; Is to the fine…
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Ioan Henrici Alstedii Scientiarum omnium encyclopædiæ : tomus primus [-quartus] ... (1649)](https://img.insideoutlibrary.com/img/200/ia-ioanhenricialste234alst-703-95.webp)
![An illustration from Nicolai Copernici Torinensis De reuolutionibus orbium coelestium, libri VI : Habes in hoc opere iam recens nato, & aedito, studiose lector, motus stellarum, tam fixarum, quàm erraticarum, cum ex ueteribus, tum etiam ex recentibus obseruationibus restitutos: & nouis insuper ac admirabilibus hypothesibus ornatos. Habes etiam tabulas expeditissimas, ex quibus eosdem ad quoduis tempus quàm facillime caculare poteris. Igitur eme, lege, fruere. [Line in Greek] (1543)](https://img.insideoutlibrary.com/img/200/ia-nicolaicopernici00cope-68-46.webp)
![An illustration from Nicolai Copernici Torinensis De reuolutionibus orbium coelestium, libri VI : Habes in hoc opere iam recens nato, & aedito, studiose lector, motus stellarum, tam fixarum, quàm erraticarum, cum ex ueteribus, tum etiam ex recentibus obseruationibus restitutos: & nouis insuper ac admirabilibus hypothesibus ornatos. Habes etiam tabulas expeditissimas, ex quibus eosdem ad quoduis tempus quàm facillime caculare poteris. Igitur eme, lege, fruere. [Line in Greek] (1543)](https://img.insideoutlibrary.com/img/200/ia-nicolaicopernici00cope-60-36.webp)