## 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 páginas |

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ABCD ABFD acres adjacent adjacent angles angle ABC base bearing and distance breadth Calculation centre Co-secant Secant Co-sine Co-tang column decimal DegDeg Dist DEMONSTRATION departure corresponding diff difference of latitude divide division line draw equal EXAMPLES feet field-notes figures find the angles find the area four-pole chains fourth term given angle given area given bearing given number given side hypothenuse JOHN GUMMERE LatDeg LatDegDeg LatDegDegDegDeg Dist latitude and departure length logarithm M.
M. Sine measured meridian distance natural number Off-sets parallel parallelogram perches perpendicular PROBLEM quired quotient radius rectangle remainder Required the area right angled triangle right line RULE semicircle semiperimeter side AB side AC square root station stationary line subtract survey tance Tang Tangent tract of land trapezium triangle ABC trigonometry

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Página 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.

Página 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.

Página 26 - Parallel straight lines are such as are in the same plane, and which being produced ever so far both ways, do not meet.

Página 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.

Página 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.