A Treatise on Surveying: Containing the Theory and Practice: to which is Prefixed a Perspicuous System of Plane Trigonometry. The Whole Clearly Demonstrated and Illustrated by a Large Number of Appropriate Examples, Particularly Adapted to the Use of SchoolsKimber & Sharpless, 1828 - 216 σελίδες |
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Σελίδα 42
... acres above 45 ° are therefore counted backward on the line , and are found at the same points of the line as the tangents of their complements . There are several other lines on this side of the scale , as Sine Rhumbs , Tangent Rhumbs ...
... acres above 45 ° are therefore counted backward on the line , and are found at the same points of the line as the tangents of their complements . There are several other lines on this side of the scale , as Sine Rhumbs , Tangent Rhumbs ...
Σελίδα 85
... Acres , Roods , and Perches . 14. In going round a tract of land and returning to the place of beginning , it is evident that the whole northing which has been made , must be equal to the southing , and the easting to the westing ; or ...
... Acres , Roods , and Perches . 14. In going round a tract of land and returning to the place of beginning , it is evident that the whole northing which has been made , must be equal to the southing , and the easting to the westing ; or ...
Σελίδα 87
... acres . RULE . Divide by 10 , and the quotient will be the acres . If there is a decimal in the quotient , multiply it by 4 , for the roods ; and the decimal of these by 40 , for the perches . EXAMPLES . 1. Reduce 523.2791 square chains ...
... acres . RULE . Divide by 10 , and the quotient will be the acres . If there is a decimal in the quotient , multiply it by 4 , for the roods ; and the decimal of these by 40 , for the perches . EXAMPLES . 1. Reduce 523.2791 square chains ...
Σελίδα 88
... acres . Ans . 4 ac . 0 r . 31 p . 3. Reduce 132.925 square chains to acres . Ans . 13 ac . 1 r . 6.8 p . PROBLEM IV . To reduce acres , roods and perches to square chains . RULE . Divide the perches by 40 and prefix the roods ; di- vide ...
... acres . Ans . 4 ac . 0 r . 31 p . 3. Reduce 132.925 square chains to acres . Ans . 13 ac . 1 r . 6.8 p . PROBLEM IV . To reduce acres , roods and perches to square chains . RULE . Divide the perches by 40 and prefix the roods ; di- vide ...
Σελίδα 129
... Acres 61 A. 2 R. 2. What is the area of a triangular field whose sides measure 10.64 , 12.28 and 9.00 chains ? Ans . 4 A. 2 R. 26 P. 3. What quantity of land is contained in a triangle , the sides of which are 20 , 30 and 40 chains ...
... Acres 61 A. 2 R. 2. What is the area of a triangular field whose sides measure 10.64 , 12.28 and 9.00 chains ? Ans . 4 A. 2 R. 26 P. 3. What quantity of land is contained in a triangle , the sides of which are 20 , 30 and 40 chains ...
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A Treatise on Surveying: Containing the Theory and Practice: To Which Is ... John Gummere Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2016 |
Συχνά εμφανιζόμενοι όροι και φράσεις
100 Distance AB² ABCD ABFD acres adjacent angles ABC base bearings and distances Calculation centre changed bearing Co-secant Secant Co-sine Co-tang column compass decimal degrees DEMONSTRATION diff difference of latitude dist divide division line draw east equal EXAMPLES figures find the angle find the area fourth term given angle given area given bearing given number given side Given the bearings hypothenuse John Gummere LatDegDegDegDeg Distance latitude and departure length line FE logarithm M.
M. Sine measured meridian multiplier natural number off-sets parallelogram perches perpendicular place of beginning pole star prob quired quotient radius rectangle Required the area right line right-angled triangle ROBERT ADRAIN RULE side AC square root station stationary lines subtract take the difference tance Tangent tract of land trapezium Treatise on Surveying triangle ABC trigonometry two-pole chains
Δημοφιλή αποσπάσματα
Σελίδα 21 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds.
Σελίδα 30 - The angle at the centre of a circle is double of the angle at the circumference upon the same base, that is, upon the same part of the circumference.
Σελίδα 61 - A maypole, whose top was broken off by a blast of wind, struck the ground at 15 feet distance from the foot of the pole: what was the height of the whole maypole, supposing the broken piece to measure 39 feet in length ? Ans.
Σελίδα 13 - A plane rectilineal angle is the inclination of two straight lines to one another, which meet together, but are not in the same straight line.
Σελίδα 14 - A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference.
Σελίδα 22 - Sine, or Right Sine, of an arc, is the line drawn from one extremity of the arc, perpendicular to the diameter which passes through the other extremity. Thus, BF is the sine of the arc AB, or of the supplemental arc BDE.
Σελίδα 12 - Parallel straight lines are such as are in the same plane, and which being produced ever so far both ways, do not meet.
Σελίδα 109 - Sides are given. From half the sum of the three sides, subtract each side severally ; multiply the half sum, and the three remainders together, and the square root of the product will be the Area required. Example. — Required the Area of a Triangle, whose sides are 50, 40, and 30 feet. 50 + 40 + 30.. fin half sum of the three sides.
Σελίδα 13 - A plane superficies is that in which any two points being taken, the straight line between them lies wholly in that superficies. 8. A plane angle is the inclination of two lines to one another in a plane, which meet together, but are not in the same direction.
Σελίδα 108 - If one side and the angles are given ; then As the product of radius and the sine of the angle opposite the given side, To the product of the sines of the two other angles ; So is the square of the given side, To twice the area of the triangle. If PC (Fig.