The Theory and Practice of Surveying: Containing All the Instructions Requisite for the Skilful Practice of this ArtEvert Duyckinck, 1814 - 508 σελίδες |
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Σελίδα 3
... Hence it appears , that as the value and deno- mination of any figure , or number of figures , in common arithmetic is enlarged , and becomes ten , or an hundred , or a thousand times greater , by placing one or two , or three ciphers ...
... Hence it appears , that as the value and deno- mination of any figure , or number of figures , in common arithmetic is enlarged , and becomes ten , or an hundred , or a thousand times greater , by placing one or two , or three ciphers ...
Σελίδα 23
... Hence it appears that there may be as many kinds of indices , or logarithms , as there can be taken kinds of geometrical series . But the Loga- rithms most convenient for common uses are those adapted to a geometrical series increasing ...
... Hence it appears that there may be as many kinds of indices , or logarithms , as there can be taken kinds of geometrical series . But the Loga- rithms most convenient for common uses are those adapted to a geometrical series increasing ...
Σελίδα 40
... hence it is plain that the radius CD is the greatest possible sine , and thence is called the whole sine . Since the whole sine CD ( fig . 8. ) must be per- pendicular to the diameter ( by def . 20. ) therefore producing DC to E , the ...
... hence it is plain that the radius CD is the greatest possible sine , and thence is called the whole sine . Since the whole sine CD ( fig . 8. ) must be per- pendicular to the diameter ( by def . 20. ) therefore producing DC to E , the ...
Σελίδα 42
... Hence angles are greater or less according as the arc described about the angular point , and termi- nated by the two sides , contains a greater or less number of degrees of the whole circle . 29. The sine , tangent , and secant of an ...
... Hence angles are greater or less according as the arc described about the angular point , and termi- nated by the two sides , contains a greater or less number of degrees of the whole circle . 29. The sine , tangent , and secant of an ...
Σελίδα 43
... Hence all triangles between the same parallels have the same height , since all the perpendiculars are equal from the nature of parallels . 41. Any figure of four sides is called a quadri- lateral figure . 42. Quadrilateral figures ...
... Hence all triangles between the same parallels have the same height , since all the perpendiculars are equal from the nature of parallels . 41. Any figure of four sides is called a quadri- lateral figure . 42. Quadrilateral figures ...
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acres altitude Answer arch base bearing blank line centre chains and links circle circle of latitude circumferentor Co-sec Co-tang column compasses contained decimal Dep Lat Dep difference Dist divided divisions draw east Ecliptic edge EXAMPLE feet field-book figures fore four-pole chains geometrical series given number half the sum Horizon glass hypothenuse inches instrument Lat Dep Lat latitude length logarithm measure meridian distance multiplied Natural Co-sines natural sine Nonius number of degrees object observed off-sets opposite parallelogram perches perpendicular plane pole pole star PROB proportion protractor Quadrant quotient radius right angles right line scale of equal SCHOLIUM screw Secant sect semicircle Sextant side sights square root station stationary distance subtracted survey taken Tang tangent theo theodolite trapezium triangle ABC trigonometry vane versed sine vulgar fraction