A Compendious System of Practical Surveying, and Dividing of Land: Concisely Defined, Methodically Arranged, and Fully Exemplified : the Whole Adapted for the Easy and Regular Instruction of Youth, in Our American SchoolsJohnson and Warner, 1814 - 227 sider |
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Resultat 1-5 av 14
Side 52
... column , and against it is .89763 ; 1 being the index , because the given number has two figures . To find the logarithm of 763 . Look for 763 as before , against which is .88252 , the index being 2 , because the given number has three ...
... column , and against it is .89763 ; 1 being the index , because the given number has two figures . To find the logarithm of 763 . Look for 763 as before , against which is .88252 , the index being 2 , because the given number has three ...
Side 53
... column under 0 , and there the next less logarithm will be 7705 , opposite to 593 in the side column , then look directly across the page , and the exact logarithm .will be found under 5 at the top , which annex to 593 , makes 5935 ...
... column under 0 , and there the next less logarithm will be 7705 , opposite to 593 in the side column , then look directly across the page , and the exact logarithm .will be found under 5 at the top , which annex to 593 , makes 5935 ...
Side 59
... column marked M , against which , in the column signified at the top with the proposed name , stands the sine , tangent , or secant required ; but when the degrees given , be more than 45 , seek them at the bottom , and the minutes in ...
... column marked M , against which , in the column signified at the top with the proposed name , stands the sine , tangent , or secant required ; but when the degrees given , be more than 45 , seek them at the bottom , and the minutes in ...
Side 132
... columns marked , Dist . And if the degrees be less than 45 , they are found at the top of the page ; and in the columns marked Lat . and Dep . is the latitude and departure answering thereto ; but if the degrees exceed 45 , they are ...
... columns marked , Dist . And if the degrees be less than 45 , they are found at the top of the page ; and in the columns marked Lat . and Dep . is the latitude and departure answering thereto ; but if the degrees exceed 45 , they are ...
Side 133
... columns , 48.10 40.33 22.13 I find Opposite to 8 , moving the point one figure to the left hand , 00.70 00.38 Give , as ... column , as if they were a whole number ; and in taking out the latitude and departure , move the deci- mal point ...
... columns , 48.10 40.33 22.13 I find Opposite to 8 , moving the point one figure to the left hand , 00.70 00.38 Give , as ... column , as if they were a whole number ; and in taking out the latitude and departure , move the deci- mal point ...
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A Compendious System of Practical Surveying, and Dividing of Land: Concisely ... Uten tilgangsbegrensning - 1814 |
A Compendious System of Practical Surveying, and Dividing of Land: Concisely ... Uten tilgangsbegrensning - 1814 |
A Compendious System of Practical Surveying, and Dividing of Land: Concisely ... Zachariah Jess Ingen forhåndsvisning tilgjengelig - 2023 |
Vanlige uttrykk og setninger
40 perches acres angle opposite Artificial Sines base BC bearing and distance centre chains chord of 60 circle Co-sec Co-sine column compasses decimal Deg Lat DegDeg Dep Dist describe an arch diameter diff difference of latitude divide division line double area East EXAMPLE extent will reach feet find the angles find the area find the bearing find the Content find the difference find the hypothenuse find the logarithm foot GUNTER half the difference half the sum hypothenuse 121 hypothenuse AC intersect Lat Dep latitude and departure left hand line of numbers line of sines Meridian Distance Multiply North Oblique Angled Trigonometry off-sets opposite angle parallelogram perpen perpendicular BC piece of ground PROBLEM quotient radius 90 Rhombus right angled triangle Right Angled Trigonometry RULE scale of equal Secant side BC South square perches square root subtracted survey tangent tenth Trapezium West
Populære avsnitt
Side 224 - Observe, if the true and magnetic amplitudes be both north or both south, their difference is the variation ; but if one be north and the other south, their sum is the variation : and, to know whether it be easterly or westerly, suppose the observer looking towards that point of the compass representing the magnetic amplitude ; then, if the true amplitude be to the right hand of the magnetic, the variation is east, but if to the left hand, it is west.
Side 84 - To the length of the given side ; So is the sine of the angle opposite the required side. To the length of the required side.
Side 52 - ЙО, 30, &c., to the left hand, where it ends at 87 degrees. This line. with the line of equal parts, marked (EP), under it, are used together, and only in Mercator's Sailing. The upper line contains the degrees of the meridian, or latitude in a Mercator's chart, corresponding to the degrees of longitude on the lower line.
Side 223 - . 2. Subtract the Sun's declination from 90«, when the latitude and declination are of the same name, or add it to 90*, when they are of contrary names ; and the sum, or remainder, will be the Sun's polar distance. , 3. Add together the Sun's polar distance, the latitude of the place, and the altitude of the Sun; take the difference between half their sum and the polar distance, and note the remainder. 4. Then add together the log. secant of the altitude ) rejectingtheir the log. secant of the latitude...
Side 53 - ... the remainder will be the logarithm of the quotient. Again, if the logarithm of any number be divided by 2, the quotient will be the logarithm of the square root of that number...
Side 221 - Ъе both north or both south, their difference is the variation ; but if one be north and the other south, their sum is the variation ; and to know whether it be easterly or westerly, suppose the observer looking towards that point of the compass representing the magnetic amplitude : then if the true amplitude be to the right hand of the magnetic amplitude, the variation is east, but if to the left hand, it is west EXAMPLE I. July 3, 1812, in latitude 9° 36' & the Sun was observed to rise E> 32»...
Side 46 - As the figures are increased or diminished in their value, so in like manner must all the intermediate strokes or subdivisions be increased or diminished ; that is, if the first 1 at the left hand be counted 1, then 2 (next following it) will...
Side 42 - BD be a line of chords. 4thly. From the points 10, 20, 30, &c., in the quadrant BD, draw right lines parallel to CD, to cut the radius CB, and they will divide that line into a line of sines which must be numbered from C toward B.