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 páginas |
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Página 15
... DIVISION OF DECIMALS . Having divided as in whole numbers , annexing cyphers to the dividend if they be wanted ; the deci- mal places in the divisor and quotient must be equal to those in the dividend , and the defect supplied by ...
... DIVISION OF DECIMALS . Having divided as in whole numbers , annexing cyphers to the dividend if they be wanted ; the deci- mal places in the divisor and quotient must be equal to those in the dividend , and the defect supplied by ...
Página 71
... divisions of the quadrant BD , and continued to BF , we shall there have the tangents of 10 , 20 , 30 , 40 , & c . and the secants C 10 , C 20 , C 30 , & c . are transferred to the line CD , produced by des- cribing the arcs , 10 , 10 ...
... divisions of the quadrant BD , and continued to BF , we shall there have the tangents of 10 , 20 , 30 , 40 , & c . and the secants C 10 , C 20 , C 30 , & c . are transferred to the line CD , produced by des- cribing the arcs , 10 , 10 ...
Página 72
... division of the arc AD ; we shall have a line of chords . The same way we may have the sine , tangents , & c . to every one single degree on the quadrant , by subdividing every of the 9 former divisions into ten equal parts . By this ...
... division of the arc AD ; we shall have a line of chords . The same way we may have the sine , tangents , & c . to every one single degree on the quadrant , by subdividing every of the 9 former divisions into ten equal parts . By this ...
Página 73
... division is called 100 , every subdi- vision 10 , and every one downwards 1 or again , frequently by navigators , every large division is call- ed 1000 , every subdivision 100 , every one down- wards , 10 , and the tenth part of the ...
... division is called 100 , every subdi- vision 10 , and every one downwards 1 or again , frequently by navigators , every large division is call- ed 1000 , every subdivision 100 , every one down- wards , 10 , and the tenth part of the ...
Página 74
... division ; that is , when two numbers proposed are to be multi- plied into each other , if we take the logarithms an- swering to those numbers , and add them together , the sum will be the logarithm answering to the number , which is ...
... division ; that is , when two numbers proposed are to be multi- plied into each other , if we take the logarithms an- swering to those numbers , and add them together , the sum will be the logarithm answering to the number , which is ...
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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 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