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 Joseph Cushing, 1816 - 472 páginas |
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Página 24
... of 3 , and 3 is the root of 9 , for 3 multiplied by 3 is 9 . If a square number be given to find its root , observe if the number of figures or places in the given square be odd or even , if they be odd , 24 DECIMAL FRACTIONS .
... of 3 , and 3 is the root of 9 , for 3 multiplied by 3 is 9 . If a square number be given to find its root , observe if the number of figures or places in the given square be odd or even , if they be odd , 24 DECIMAL FRACTIONS .
Página 36
... lemma is some demonstration , previous and ne- cessary , to render what follows the more easy . A corollary is a consequent truth , deduced from a foregoing demonstration . A scholium , is a remark or observation made upon 36 GEOMETRY .
... lemma is some demonstration , previous and ne- cessary , to render what follows the more easy . A corollary is a consequent truth , deduced from a foregoing demonstration . A scholium , is a remark or observation made upon 36 GEOMETRY .
Página 37
... observation made upon something going before . SIGNIFICATION OF SIGNS . The sign , denotes the quantities between which it stands to be equal . The sign + , denotes the quantity it precedes to be added . The sigh , denotes the quantity ...
... observation made upon something going before . SIGNIFICATION OF SIGNS . The sign , denotes the quantities between which it stands to be equal . The sign + , denotes the quantity it precedes to be added . The sigh , denotes the quantity ...
Página 84
... observe the index of the given log . which shews how many figures must be integers , and how many decimals ; for the number of integers is one more than the given index as before . EXAMPLE I. 1. Required , the number of the log ...
... observe the index of the given log . which shews how many figures must be integers , and how many decimals ; for the number of integers is one more than the given index as before . EXAMPLE I. 1. Required , the number of the log ...
Página 89
... observe , that each page is divided into 8 columns , the first and last of which are minutes , and the intermediate ones contain the sines , tangents , and secants , the upper and lower columns contain de grees , the column of the ...
... observe , that each page is divided into 8 columns , the first and last of which are minutes , and the intermediate ones contain the sines , tangents , and secants , the upper and lower columns contain de grees , the column of the ...
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A Treatise of Practical Surveying: Which is Demonstrated From Its First ... Robert Gibson Sin vista previa disponible - 2021 |
Términos y frases comunes
20 perches 50 Dist ABCD acres altitude annexed Answer base bearing bisect blank line centre chains and links chord circle circumferentor Co-secant Secant Co-sine Co-tang column contained cyphers decimal decimal fraction Dep Lat difference 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 magnetical measure meridian distance multiplied needle number of degrees object off-sets parallel parallelogram perpendicular piece of ground plane Portmarnock PROB proportion protractor quotient radius right angles right line scale of equal SCHOLIUM sect semicircle side sights sine square root stationary distance sun's suppose survey taken tance Tang tangent thence theo theodolite THEOREM thro trapezium triangle ABC trigonometry true amplitude true azimuth two-pole chains vane variation whence