The theory and practice of surveying. Designed for the use of surveyors and engineers generally, but especially for the use of students in engineering (1886)
Johnson, J. B. (John Butler), 1850-1902 · New York, J. Wiley & sons · leaf 666
meters : a =^ () 378 206 metres, ^ = 6 356 584 or a \ b :: 294.98 : 293.98. See Appendix No. 7, U. S. Coast and Geodetic Survey, for tabularvalues of constants and forms for reduction. TABLES. TABLE I. Trigonometric Formul/E. Trigonometric Functi®is. Let A (Fig, 107) = angle BAG- arc BF, and let… … Fig. 107. In the right-angled triangle ABC (Fig. 107)Let AB = c, AC - b, and BC = a.We then have: 1. sin^ ~ c = cos J5 2. cos^ = bc = sin B 3. tan^ = a -cotB 4. cot A = ba — tan B 5. sec A = c T — cosec B 6. cosec A = c a = sec B 7. vers A — c -h = covers B c — b 8. exsec A = —^— = coexsec B b 9.…
Surveying
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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-348-238.webp)
