Bartlett, W. H. C. (William Holms Chambers), 1804-1893 · New York : Barnes · leaf 244
ellipse of•which CA and CB arethe semi-axes, denotedrespectively by A andB; and suppose to andto to be two of its con-secutive places. Drawthe tangent to Q at the point to, and parallel to this tangent draw the diameterD D\ perpendicular to which, draw from to the line to K.From to draw to n… … to find the law; TO 71 whence CD C TO X ran X n 0; ton X Cm mn = z== 0 J)2 X n Gr value of theversed sine: Because to n and to h are respectively perpendicular tothe lines to K and to C, the angles h to n and Cm K areequal, and the angles at K and h being right angles, thetriangles to nh and Cm K…
Mechanics · Acoustics · Optics
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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-194-115.webp)
