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 25
... remainder . Let the double of the said root be made a divisor to all the figures of that last remainder , except the last ; put the quotient thereof with the root , or former quo- tient ; and having multiplied it into the numbers so ...
... remainder . Let the double of the said root be made a divisor to all the figures of that last remainder , except the last ; put the quotient thereof with the root , or former quo- tient ; and having multiplied it into the numbers so ...
Σελίδα 81
... the denominator of the frac- tion , and the remainder will be the log . required ; or the index of the log . must be 1 less than the number of figures in the integer to which the decimal is 11 OF LOGARITHMS . 81 EXAMPLE II. ...
... the denominator of the frac- tion , and the remainder will be the log . required ; or the index of the log . must be 1 less than the number of figures in the integer to which the decimal is 11 OF LOGARITHMS . 81 EXAMPLE II. ...
Σελίδα 91
... by the sine and co - sine . The co - sine taken from the sine added to 90 , or ra- dius , which is 10.00000 , the remainder is the tangent , ( by part 1. theo . 24. ) EXAMPLE . 1. Suppose the tangent of 41 ° . OF LOGARITHMS . 91.
... by the sine and co - sine . The co - sine taken from the sine added to 90 , or ra- dius , which is 10.00000 , the remainder is the tangent , ( by part 1. theo . 24. ) EXAMPLE . 1. Suppose the tangent of 41 ° . OF LOGARITHMS . 91.
Σελίδα 92
... remainder is the sine required ( by part 2. theo . 24. ) EXAMPLE . Suppose the sine of 46 ° . 50 ' . was defaced , but the tangent and co - sine visible . To the tangent of 46 ° . 50 ' Add the co - sine of 46 ° . 50 ′ 10.02781 1 9.83513 ...
... remainder is the sine required ( by part 2. theo . 24. ) EXAMPLE . Suppose the sine of 46 ° . 50 ' . was defaced , but the tangent and co - sine visible . To the tangent of 46 ° . 50 ' Add the co - sine of 46 ° . 50 ′ 10.02781 1 9.83513 ...
Σελίδα 93
... remainder is the tangent ( by theo . 24 . part 5. ) EXAMPLE . Required the tangent of 29 ° . 50 ' being defaced , as also the sine and co - sine defaced , by the co - tangent only . From twice the radius , - Take the co - tangent of 29 ...
... remainder is the tangent ( by theo . 24 . part 5. ) EXAMPLE . Required the tangent of 29 ° . 50 ' being defaced , as also the sine and co - sine defaced , by the co - tangent only . From twice the radius , - Take the co - tangent of 29 ...
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A Treatise of Practical Surveying: Which is Demonstrated From Its First ... Robert Gibson Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2021 |
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