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, 1840 - 414 pages |
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Page 26
... sides equal , as B , Fig . 8 . 17. A scalene triangle has three unequal sides , as ABC , Fig . 6 . 18. A right angled triangle has one right angle , as ABC , Fig . 9 ; in which the side AC , opposite to the right angle , is called the ...
... sides equal , as B , Fig . 8 . 17. A scalene triangle has three unequal sides , as ABC , Fig . 6 . 18. A right angled triangle has one right angle , as ABC , Fig . 9 ; in which the side AC , opposite to the right angle , is called the ...
Page 27
... sides is called a trapeziod . 30. A right line joining any two opposite angles of a quadrilateral figure , is called a diagonal . 31. That side upon which any parallelogram , or triangle is supposed to stand , is called the base ; and ...
... sides is called a trapeziod . 30. A right line joining any two opposite angles of a quadrilateral figure , is called a diagonal . 31. That side upon which any parallelogram , or triangle is supposed to stand , is called the base ; and ...
Page 28
... sides , are called pentagons ; those having six sides , hexa- gons , and so on . 33. A regular polygon is one whose angles , as well as sides , are all equal . 34. A circle is a plane figure , bounded by one curve line called the ...
... sides , are called pentagons ; those having six sides , hexa- gons , and so on . 33. A regular polygon is one whose angles , as well as sides , are all equal . 34. A circle is a plane figure , bounded by one curve line called the ...
Page 41
... side , a diagonal scale , and also the lines of chords , sines , tangents , and secants , with several others . On the other side there are several logarithmic lines as follow : The line of numbers marked Num . , is numbered from the ...
... side , a diagonal scale , and also the lines of chords , sines , tangents , and secants , with several others . On the other side there are several logarithmic lines as follow : The line of numbers marked Num . , is numbered from the ...
Page 42
... side of the scale , as Sine Rhumbs , Tangent Rhumbs , Versed Sines , & c .; but those described are sufficient for solving all the pro- blems in plane trigonometry . Remarks on Angles , Triangles , & c . 1. If from a point D in a right ...
... side of the scale , as Sine Rhumbs , Tangent Rhumbs , Versed Sines , & c .; but those described are sufficient for solving all the pro- blems in plane trigonometry . Remarks on Angles , Triangles , & c . 1. If from a point D in a right ...
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Common terms and phrases
100 Distance AB² ABCD acres adjacent angles axis bearings and distances centre changed bearing Co-secant Secant Co-sine Co-tang compass decimal Degrees DEMONSTRATION diff difference of latitude difference of level dist divide division line draw equal EXAMPLES feet find the angles find the area fourth term given angle given area given side Given the bearings half height Hence horizontal hypothenuse instrument last problem latitude and departure length line FE line of collimation line of level logarithm measured meridian multiplier natural number off-sets parallel parallelogram parture perches perpendicular pole star prob quired quotient radius Required the area right angles right line right-angled triangle RULE screws side AC Sine square root stake station stationary lines straight line subtract survey take the difference Tangent theodolite tract of land trapezium triangle ABC trigonometry upper telescope vane vernier plate
Popular passages
Page 35 - 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.
Page 79 - 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.
Page 127 - 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 ; — 60, half the sum of the three sides.
Page 28 - A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference.
Page 36 - 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.
Page 26 - Parallel straight lines are such as are in the same plane, and which being produced ever so far both ways, do not meet.
Page 25 - 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.
Page 126 - 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.
Page 62 - Call the word written upon each side the name of each side: then say, " As the name of the given side, " Is to the given side ; " So is the name of the required side,
Page 19 - Hence, if we find the logarithm of the dividend, and from it subtract the logarithm of the divisor, the remainder will be the logarithm of the quotient. This additional caution may be added. The difference of the logarithms, as here used, means the algebraic difference ; so that, if the logarithm of the divisor...