A Compendious System of Practical Surveying, and Dividing of Land; Concisely Defined, Methodically Arranged, and Fully Exemplified

A Compendious System of Practical Surveying, and Dividing of Land; Concisely Defined, Methodically Arranged, and Fully Exemplified : The Whole Adapte

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1814 edition. Excerpt: ... thus, the angle to the top, 67, its complement is 23, the angle at C; then the difference between the two attitudes, is 18 SO1"; and of course the angle ABC 138 SCC, by position 3; hence the height of the object will be found to be 110.5 feet. And by Right Angled Trigonometry, the height of the hill may be found to be 101.8 feet and depth to the perpendicular distance of the object 90.12 feet. PROBLEM III. From the lop of u Hill to find, the Height of a perpendicular Object, at the foot thereof. /-Angle to the foot of the object 55 15', Given Angle to the top 31 15', Distance to the foot of the object 250 feet. A me. By the same Case, as the last Problem, the height of the object will be found to be 119 feet; the horizontal distance AE, 142.5 feet, and heigh', of lie hill 205.4 feet; from the height of the hill, take the height of the object, leaves 86.4 feet; that the hill is above the object.. The adding and subtracting these of angles, are omitted to try the judgment of the learner. PROBLEM IV. To tafee the Height of an inaccessible Object, on a plane, at two Stations. Angle at the nearest station to the top 55, Stationary distance 87 feet backwards, Angle at the farthest station to the top 37. ' v. RULE. "-By Case 1, Oblique Angled Trigonometry, find "the distance from cither station, to the top of the object; from the nearest is 169.4 feet; from the farthest is 230.6 feet; then, by Right Angled Trigonometry, the height of the object will be found to be 138.8 feet. PROBLEM V. Let BC be a pole 100 feet high, and broken off at D, so that the part broken off, viz. DC, will reach from the top of the stump to A, on a plane. 34 feet from the bottom or foot of th pole. Required the length of the part broken off? RULE...."show more

Product details

  • Paperback | 26 pages
  • 189 x 246 x 1mm | 68g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236536282
  • 9781236536280