A Treatise on Practical Surveying: Which is Demonstrated from Its First Principles : Wherein Every Thing that is Useful and Curious in that Art, is Fully Considered and ExplainedF. Lucas, jun. and Cushing & Jewett, J. Robinson printer, 1822 - 326 σελίδες |
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Σελίδα 21
... proceed , till all the figures of the given square are exhausted , If there be any decimals in the given square , their number must be even , or made so , before we begin to find the root , by adding a cypher to the right hand ; and for ...
... proceed , till all the figures of the given square are exhausted , If there be any decimals in the given square , their number must be even , or made so , before we begin to find the root , by adding a cypher to the right hand ; and for ...
Σελίδα 86
... proceed to 44 , where they end ; and those at the bot- tom of the page begin at 89 , and proceed to 45 in a decreasing series ; the degrees in the different co- lumns being the complement of each other . From what has been said , we may ...
... proceed to 44 , where they end ; and those at the bot- tom of the page begin at 89 , and proceed to 45 in a decreasing series ; the degrees in the different co- lumns being the complement of each other . From what has been said , we may ...
Σελίδα 110
... means he will find and see more distinctly their mutual agreements ; and become more expert , and the better acquainted with the subject . 1 OBLIQUE ANGULAR PLANE TRIGONOMETRY . BEFORE EFORE we proceed to 110 PLANE TRIGONOMETRY .
... means he will find and see more distinctly their mutual agreements ; and become more expert , and the better acquainted with the subject . 1 OBLIQUE ANGULAR PLANE TRIGONOMETRY . BEFORE EFORE we proceed to 110 PLANE TRIGONOMETRY .
Σελίδα 111
... proceed to the solution of the four cases of oblique angular triangles , it is necessary to pre- mise the following theorems . THEOREM I. In any plane triangle ABC , the sides are propor- tional to the sines of their opposite angles , i ...
... proceed to the solution of the four cases of oblique angular triangles , it is necessary to pre- mise the following theorems . THEOREM I. In any plane triangle ABC , the sides are propor- tional to the sines of their opposite angles , i ...
Σελίδα 123
... Having thus gone through plane trigonometry , we shall now proceed to apply the same , in determining the measures of inaccessible heights and distances . OF HEIGHT . THE instrument of least expense for taking PLANE TRIGONOMETRY . 123.
... Having thus gone through plane trigonometry , we shall now proceed to apply the same , in determining the measures of inaccessible heights and distances . OF HEIGHT . THE instrument of least expense for taking PLANE TRIGONOMETRY . 123.
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Συχνά εμφανιζόμενοι όροι και φράσεις
20 perches ABCD acres altitude Answer base bearing blank line centre chains and links chord circle circumferentor Co-secant co-sine Co-tang column compass contained cyphers decimal decimal fraction difference Dist divided divisor draw east edge EXAMPLE feet field-book figures four-pole chains given angle half the sum height Hence hypothenuse inches instrument latitude length logarithm measure meridian distance multiplied needle number of degrees object off-sets opposite parallel parallelogram perpendicular piece of ground plane polygon Portmarnock PROB proportion protractor quotient radius right angles right line scale of equal SCHOLIUM secant second station sect semicircle side sights sine square root stationary distance stationary line sun's suppose survey taken tang tangent thence theo theodolite THEOREM thro triangle ABC trigonometry true amplitude true azimuth two-pole chains vane variation whence