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 σελίδες |
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Σελίδα 2
... intersect in a point , is called an Angle , as the open- ing between the lines AB and AC ; the angle is generally represented by three letters , thus BAC , the middle letter being at the angular point , or place of intersection , which ...
... intersect in a point , is called an Angle , as the open- ing between the lines AB and AC ; the angle is generally represented by three letters , thus BAC , the middle letter being at the angular point , or place of intersection , which ...
Σελίδα 15
... intersect the perpendicular , so that the upper end ( cut off by this bisecting line ) will exactly reach from the place of in- tersection , as at G , to the extreme end of the base , as to D ; thus the lines DG and FG , are equal in ...
... intersect the perpendicular , so that the upper end ( cut off by this bisecting line ) will exactly reach from the place of in- tersection , as at G , to the extreme end of the base , as to D ; thus the lines DG and FG , are equal in ...
Σελίδα 18
... compasses wider , and with one foot in C , describe an arch , as at F ; then with the same extent , and one foot in e , intersect the former arch at F , draw EF , and it is F A E c B PROBLEM IV . To erect done . 18 GEOMETRICAL PROBLEMS .
... compasses wider , and with one foot in C , describe an arch , as at F ; then with the same extent , and one foot in e , intersect the former arch at F , draw EF , and it is F A E c B PROBLEM IV . To erect done . 18 GEOMETRICAL PROBLEMS .
Σελίδα 21
... , describe an arch at E ; choose any other point in the line , as at D , and with the distance DC , intersect the former arch in E ; join CE , and it is done as required . A D E PROBLEM VII . To make a right GEOMETRICAL PROBLEMS . RICAL.
... , describe an arch at E ; choose any other point in the line , as at D , and with the distance DC , intersect the former arch in E ; join CE , and it is done as required . A D E PROBLEM VII . To make a right GEOMETRICAL PROBLEMS . RICAL.
Σελίδα 26
... intersects the perpendicular , will be its length ; then the hypothenuse CA , measured on the same scale , will be 327.6 , and the perpendicular BC , 179.6 perches . 33 15 B PROBLEM XII . The hypothenuse , and one leg given 274 26 ...
... intersects the perpendicular , will be its length ; then the hypothenuse CA , measured on the same scale , will be 327.6 , and the perpendicular BC , 179.6 perches . 33 15 B PROBLEM XII . The hypothenuse , and one leg given 274 26 ...
Άλλες εκδόσεις - Προβολή όλων
A Compendious System of Practical Surveying, and Dividing of Land: Concisely ... Πλήρης προβολή - 1814 |
A Compendious System of Practical Surveying, and Dividing of Land: Concisely ... Πλήρης προβολή - 1814 |
A Compendious System of Practical Surveying, and Dividing of Land: Concisely ... Zachariah Jess Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2023 |
Συχνά εμφανιζόμενοι όροι και φράσεις
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
Δημοφιλή αποσπάσματα
Σελίδα 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...
Σελίδα 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.
Σελίδα 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.
Σελίδα 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...
Σελίδα 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.
Σελίδα 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...
Σελίδα 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....
Σελίδα 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.
Σελίδα 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.
Σελίδα 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...