And the fquare rootof 3000.000 is B C 1732050,rhefubtenfe of 120deg. 7 The fubtenfe of go degrees is the fide of a fquare inferibed in a Circle, and in power e-qual to the Diameter, or twice Radius. Demonflmtion. In the followii ig Figure, let the fides A C and C B be equal, and then is the angle A… … trigonometna Britannicvfc
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![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-43-22.webp)
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