The American house-carpenter; a treatise on the art of building, and the strength of materials (1867)
Hatfield, R. G. (Robert Griffith), 1815-1879 · New York, J. Wiley · leaf 40
e chord. {Art. 158.) Exarrvple.—In an arc of a circle whose radius is Y5 feet,what is the versed sine to a chord of 120 feet ? By the tablein the Appendix it will be seen that— The square of the radius, 75, equals, , . 5625The square of half the chord, 60, equals, . 3600 The difference is, 2025 The… … 28 AMERICAN HOUSE-CAICPEI^TEE. 88.—To describe the aegment of a eirde hy intersection of lines. Let a 5, {Fig. 47,) be the cliord, and c d the height of the segment. Through c, draw e f parallel to ah ; draw h f at right angles to ch ; make c e equal to c f; draw a g and h A, at right angles to a…
Carpentry · Architecture
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![An illustration from Cosmographia in qvatvor libros distribvta summo ordine, miraqve facilitate, ac breuitate ad magnam Ptolemæi mathematicam constructionem, ad vniuersamque astrologiam institutens. Francisco Barocio ... avtore. Cum præfatione eiusdem autoris, in qua perfecta quidem astrologiæ diuisio, & enarratio autorum illustrium, & voluminum ab eis conscriptorum in singulis astrologiæ partibus habetur: Joannis de Sacrobosco verò 84 errores, et alij permulti suorum expositorum, & sectatorum ostenduntur. rationibusq[uam] redarguuntur. Præcesserunt etiam quædam communia mathematica, necnon arithmetica, & geometrica principia, nonnullæq[uam] propositiones, de quibus in toto opere sæpe fit mentio: ac demum locupletissimus index eorum, quæ ipsa Cosmographia continentur .. (1585)](https://img.insideoutlibrary.com/img/200/ia-cosmographiainqv00baro-446-117.webp)
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