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 σελίδες |
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Σελίδα 19
... DIVISION OF DECIMALS . Having divided as in whole numbers , annexing cy- phers to the dividend if they be wanted ; the decimal places in the divisor and quotient must be equal to those in the dividend , and the defect supplied by pre ...
... DIVISION OF DECIMALS . Having divided as in whole numbers , annexing cy- phers to the dividend if they be wanted ; the decimal places in the divisor and quotient must be equal to those in the dividend , and the defect supplied by pre ...
Σελίδα 75
... 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 describing 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 describing the arcs , 10 , 10 ...
Σελίδα 76
... 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 10 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 10 equal parts . By this ...
Σελίδα 77
... division is 10 , every one of the subdivisions is 1 , and every one down- wards is one tenth of a perch ; or sometimes thus , every large division is called 100 , every subdivision 10 , and every one downwards 1 ; or again , frequently ...
... division is 10 , every one of the subdivisions is 1 , and every one down- wards is one tenth of a perch ; or sometimes thus , every large division is called 100 , every subdivision 10 , and every one downwards 1 ; or again , frequently ...
Σελίδα 78
... division ; that is , when two numbers proposed are to be multipli- ed into each other , if we take the logarithms answering to those numbers , and add them together , the sum will be the logarithm answering to the number , which is the ...
... division ; that is , when two numbers proposed are to be multipli- ed into each other , if we take the logarithms answering to those numbers , and add them together , the sum will be the logarithm answering to the number , which is the ...
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Συχνά εμφανιζόμενοι όροι και φράσεις
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