A Complete Treatise on Practical Mathematics: Including the Nature and Use of Mathematical Instruments: Logarithmic Tables, Trigonometry, Mensuration of Heights and Distances,--of Surfaces & Solids, Land Surveying, Gunnery, Gauging, Artificer's Measuring, Miscellaneous Exercises. With an Appendix on Algebra ... Principally Designed for the Use of Schools and AcademiesBell and Bradfute, 1792 - 431 σελίδες |
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Σελίδα 247
... direction AB , and he put down another as a mark ; which done , you take up the fecond , and proceed to the third ; and so on , till you come to B. The number of arrows taken up by you is the number of chain - lengths ; and the dif ...
... direction AB , and he put down another as a mark ; which done , you take up the fecond , and proceed to the third ; and so on , till you come to B. The number of arrows taken up by you is the number of chain - lengths ; and the dif ...
Σελίδα 258
... directions : -Let A b c d e f represent a river or hedge . From A , in the direction of the ri- ver , measure the straight line AB . In doing of which , observe the bendings of the hedge ; from thence measure the off - fets ...
... directions : -Let A b c d e f represent a river or hedge . From A , in the direction of the ri- ver , measure the straight line AB . In doing of which , observe the bendings of the hedge ; from thence measure the off - fets ...
Σελίδα 263
... direction AB , is an off - fet of 60 links ; mark the dif- tance 135 in the middle column ; and right opposite to 135 in the middle column , write the off - fet 60 in the right hand co- lumn . At the distance of 470 from A , in the ...
... direction AB , is an off - fet of 60 links ; mark the dif- tance 135 in the middle column ; and right opposite to 135 in the middle column , write the off - fet 60 in the right hand co- lumn . At the distance of 470 from A , in the ...
Σελίδα 264
... directions for planning may serve for any one who has studied and understands the use of his inftruments . It may , indeed , be neceffary to mention , that all plans of furveys ought to be laid down fo , as the north fide may ly towards ...
... directions for planning may serve for any one who has studied and understands the use of his inftruments . It may , indeed , be neceffary to mention , that all plans of furveys ought to be laid down fo , as the north fide may ly towards ...
Σελίδα 269
... direction . It is fixed to a stand of a convenient height , and moves upon an univerfal joint , by which means it will incline in any direction , and , being screw- ed faft in the focket , it will retain any fituation given it . The ...
... direction . It is fixed to a stand of a convenient height , and moves upon an univerfal joint , by which means it will incline in any direction , and , being screw- ed faft in the focket , it will retain any fituation given it . The ...
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Συχνά εμφανιζόμενοι όροι και φράσεις
abfciffa acres againſt alfo alſo altitude amplitude axis bafe baſe becauſe breadth centre chain chord of half circle circumference Co-fec Co-tan column cone conjugate cube defcribe dift diſtance divide divifor elevation Engliſh equal Euclid EXAMPLE fame fecond fegment fhall fimilar find the area find the folidity firſt fquare root fquare yards fruftum ftraight line fubtract fuch fuperficies furface girt given greateſt half the arch height horizontal houſe hypothenufe inftrument laft acquired velocity laſt lefs logarithm malt bufhels meaſure obferved off-fets oppofite ordinate parabolic perpendicular plane Plate quantity quotient rectangle Required the area Required the content Required the folidity rhombus right angles RULE Secant Secant Co-fec ſpace ſphere ſpindle ſquare ſteeple Suppofe tangent theodolite theſe thickneſs tranfverfe trapezium triangle triangular uſed verfed whofe diameter whofe fide whofe length whoſe wine gallons
Δημοφιλή αποσπάσματα
Σελίδα 27 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; and each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds ; and these into thirds, etc.
Σελίδα 115 - Therefore all the angles of the figure, together with four right angles, are equal to twice as many right angles as the figure has sides.
Σελίδα 3 - A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference.
Σελίδα 232 - E, is equal to twice as many right angles as the figure has sides, less four right angles.
Σελίδα 1 - ... common to the two triangles AFE, BFE, there are two sides in the one equal to two sides in the other, each to each ; and the base EA is equal to the base EB ; (i.
Σελίδα 38 - BG; that is, the fum of the fides is to their difference, as the tangent of half the fum of the angles at the bafe to the tangent of half their difference.
Σελίδα 372 - Subtract the square number from the left hand period, and to the remainder bring down the next period for a dividend. III. Double the root already found for a divisor ; seek how many times the divisor is contained...
Σελίδα 38 - AB the greater side for a distance, let a circle be described, meeting AC, produced in E, F, and BC in D; join DA, EB, FB; and draw FG parallel to BC, meeting EB in G. The angle EAB (32.
Σελίδα 38 - ACB (32. 1.) is equal to the angles CAD and ADC, or ABC together ; therefore FAD is the difference of the angles at the...
Σελίδα 395 - TO divide a given ftraight line into two parts, fo that the rectangle contained by the whale, and one of the parts, fhall be equal to the fquare of the other part. Let AB be the given ftraight line; it is required to divide it into two parts, fo that the rectangle contained by the whole, and one of the parts, fhall be equal to the fquare of the other part. Upon AB...