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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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 , the ...
... 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 , the ...
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 60
... column , opposite to which , and over the word Tangent , stands 10.38816 , the log . required . The logarithm of any number of degrees above 90 , is found by subtracting the given degrees from 180 ° , and taking the logarithm of the ...
... column , opposite to which , and over the word Tangent , stands 10.38816 , the log . required . The logarithm of any number of degrees above 90 , is found by subtracting the given degrees from 180 ° , and taking the logarithm of the ...
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 ...
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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
180 degrees 40 perches ABCD acres angle opposite Artificial Sines base BC bearing and distance centre chains chord of 60 circle Co-sec Co-sine Co-tang Tang compasses decimal Deg Dist DegDegDeg describe an arch diameter diff difference of latitude divided 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 following figure foot half the sum hypothenuse 121 hypothenuse AC intersect 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 Stations Bearings subtracted survey tangent Trapezium West
Populære avsnitt
Side 50 - 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. The use of this Scale in solving the usual problems of Trigonometry...
Side 80 - 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 4 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; and each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds ; and these into thirds, etc.
Side 44 - I tenth part ; and the next 2, 2 tenth parts; and 10 at the end will be but one whole number or integer. 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...
Side 47 - EXAMPLE. If the diameter of a circle be 7 inches, and the circumference 22, what is the circumference of another circle, the diameter of which is 14 inches ? Extend from 7 to 22, that extent will reach from 14 to 44 the same way.
Side 217 - Then 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...
Side 220 - Ъои) on the east, or both on the west side of the meridian, their difference is the variation : but if one be on the east, and the other on the west side of the meridian, their sum is the variation ; and to know if it be east or west, suppose the observer looking towards that point of the compass representing the magnetic azimuth ; then if the true •azimuth be to the right of the magnetic, the variation is east, but if the true be to the left of the magnetic, the variation is west. EXAMPLE....
Side 215 - As the length of the whole line, Is to 57.3 Degrees,* So is the said distance, To the difference of Variation required. EXAMPLE. Suppose it be required to run a line which some years ago bore N.
Side 219 - . 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.
Side 49 - ... degrees of the quadrant, begins at the right hand against 90° on the sines, and from thence is numbered towards the left hand thus : 10, 20...