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 32
... scale , Fig . 29 . Draw eleven lines parallel to , and equidistant from each other ; cut them at right angles by the ... scales serve to take off dimensions or numbers of three figures . If the first large divisions be units , the second ...
... scale , Fig . 29 . Draw eleven lines parallel to , and equidistant from each other ; cut them at right angles by the ... scales serve to take off dimensions or numbers of three figures . If the first large divisions be units , the second ...
Σελίδα 33
... scale . Extend the dividers from E to 2 towards H ; and with one leg fixed in the point 2 , extend the other till it reaches 4 in the line EB ; move one leg of the dividers along the line 2 , 7 , and the other along the line 4 , till ...
... scale . Extend the dividers from E to 2 towards H ; and with one leg fixed in the point 2 , extend the other till it reaches 4 in the line EB ; move one leg of the dividers along the line 2 , 7 , and the other along the line 4 , till ...
Σελίδα 37
... scale of chords , describe an arc , cutting AB in m ' ; from the same scale of chords , take 38 de- grees and apply it to the arc from m ton , and from A through n draw the line AC , then will the angle A con- tain 38 degrees . Note ...
... scale of chords , describe an arc , cutting AB in m ' ; from the same scale of chords , take 38 de- grees and apply it to the arc from m ton , and from A through n draw the line AC , then will the angle A con- tain 38 degrees . Note ...
Σελίδα 40
... SCALE . GUNTERS ' Scale is an instrument by which , with a pair of dividers , the different cases in trigonometry and many other problems may be solved . It has on one side , a diagonal scale , and also the lines of chords , sines ...
... SCALE . GUNTERS ' Scale is an instrument by which , with a pair of dividers , the different cases in trigonometry and many other problems may be solved . It has on one side , a diagonal scale , and also the lines of chords , sines ...
Σελίδα 41
... scale towards the right , 1 , 2 , 3 , 4 , & c , to 10 , then 20 , 30 , 40 , & c to 90 , where it termi- nates just opposite 10 on the line of numbers . Tangents . - The line of tangents , marked Tan . be- gins at the left hand , and is ...
... scale towards the right , 1 , 2 , 3 , 4 , & c , to 10 , then 20 , 30 , 40 , & c to 90 , where it termi- nates just opposite 10 on the line of numbers . Tangents . - The line of tangents , marked Tan . be- gins at the left hand , and is ...
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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.