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 & Richardson, 1814 - 346 σελίδες |
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Σελίδα 7
... Measuring Land Preliminary Definitions , Observations , & c . SECT . I. Containing rules for finding the areas of triangles , quadrilaterals , circles , and ellipes ; also , the method of protracting a survey , and finding its area by ...
... Measuring Land Preliminary Definitions , Observations , & c . SECT . I. Containing rules for finding the areas of triangles , quadrilaterals , circles , and ellipes ; also , the method of protracting a survey , and finding its area by ...
Σελίδα 34
... measured by the arc DE , and contains the same number of degrees that the arc does . The measure of a right angle is therefore 90 degrees ; for DH , Fig . 31 , which measures the right angle DCH is one fourth part of the circumference ...
... measured by the arc DE , and contains the same number of degrees that the arc does . The measure of a right angle is therefore 90 degrees ; for DH , Fig . 31 , which measures the right angle DCH is one fourth part of the circumference ...
Σελίδα 44
... measured by the same scale of equal parts , is 162 , and BC is 95 . the sines of the angles A and B to the equal radii AC and BF . Now the trian- gles BDC and BEF being similar , we have CD : FE :: BC : BF or AC , that is sin . A : sin ...
... measured by the same scale of equal parts , is 162 , and BC is 95 . the sines of the angles A and B to the equal radii AC and BF . Now the trian- gles BDC and BEF being similar , we have CD : FE :: BC : BF or AC , that is sin . A : sin ...
Σελίδα 46
... measured by the same scale of equal parts , will be 288 , and BC will be 384 . By Calculation . As sine of B 90 ° 10.00000 Is to sine of A 53 ° 8 ' 9.90311 So is AC 480 2.68124 12.58435 2.58435 To BC 384 As sine of B 90 ° 10.00000 Is to ...
... measured by the same scale of equal parts , will be 288 , and BC will be 384 . By Calculation . As sine of B 90 ° 10.00000 Is to sine of A 53 ° 8 ' 9.90311 So is AC 480 2.68124 12.58435 2.58435 To BC 384 As sine of B 90 ° 10.00000 Is to ...
Σελίδα 48
... measured by the scale of equal parts will be 1.54 , and the angles A and B , measured by a scale of chords will be 26o 21 ′ and • Here the arc ab cuts AC in one point 120 ° 18 ' . 48 PLANE TRIGONOMETRY .
... measured by the scale of equal parts will be 1.54 , and the angles A and B , measured by a scale of chords will be 26o 21 ′ and • Here the arc ab cuts AC in one point 120 ° 18 ' . 48 PLANE TRIGONOMETRY .
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A Treatise on Surveying: Containing the Theory and Practice: To Which Is ... John Gummere Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2016 |
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Σελίδα 2 - An Act for the encouragement of learning, by securing the copies of maps, charts, and books, to the authors and proprietors of such copies during the times therein mentioned." And also to the act, entitled " An Act supplementary to an Act, entitled, " An Act for the encouragement of learning, by securing the copies of maps, charts, and books, to the authors and proprietors of such copies during the time therein mentioned," and extending the benefits thereof to the arts of designing, engraving, and...
Σελίδα 97 - To find the Area of a Triangle when the Three Sides are given. Rule. — From half the sum of the three sides subtract each side separately.
Σελίδα 43 - 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 34 - 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 2 - Co. of the said district, have deposited in this office the title of a book, the right whereof they claim as proprietors, in the words following, to wit : " Tadeuskund, the Last King of the Lenape. An Historical Tale." In conformity to the Act of the Congress of the United States...
Σελίδα 85 - 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 25 - 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 26 - Parallel straight lines are such as are in the same plane, and which being produced ever so far both ways, do not meet.
Σελίδα 91 - PROBLEM I. To find the area of a parallelogram; whether it be a square, a rectangle, a rhombus, or a rhomboides. RULE.* Multiply the length by the perpendicular height, and the product will be the area.
Σελίδα 96 - 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.