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 sider |
Inni boken
Resultat 1-5 av 16
Side 13
... leg of a right - angled triangle being given , to conftruct the figure , and find the other leg . Angle A = 30 ° 40 ′ Given Angle C = 59 ° 20 ' Required BC . AB = 300 From the diagonal fcale make AB 300 ; upon B erect a per pendicular ...
... leg of a right - angled triangle being given , to conftruct the figure , and find the other leg . Angle A = 30 ° 40 ′ Given Angle C = 59 ° 20 ' Required BC . AB = 300 From the diagonal fcale make AB 300 ; upon B erect a per pendicular ...
Side 14
... legs , AC = 568 Given Angle A = 39 ° 14 ' Required AB , and BC . Angle C - 50 ° 46 ′ Draw the line AB of an indefinite length , and draw AC e- qual 568 , making with AB an angle of 39 ° 14 ′ ; and from C drop a perpendicular , cutting ...
... legs , AC = 568 Given Angle A = 39 ° 14 ' Required AB , and BC . Angle C - 50 ° 46 ′ Draw the line AB of an indefinite length , and draw AC e- qual 568 , making with AB an angle of 39 ° 14 ′ ; and from C drop a perpendicular , cutting ...
Side 30
... legs become the fines of the oppofite angles : but if either of the legs be made radius , the other leg becomes the tangent of the oppofite angle , and the hypothenufe becomes the fecant of the fame angle . Fig . 51. plate 3 . LET ABC ...
... legs become the fines of the oppofite angles : but if either of the legs be made radius , the other leg becomes the tangent of the oppofite angle , and the hypothenufe becomes the fecant of the fame angle . Fig . 51. plate 3 . LET ABC ...
Side 31
... legs given , to find the hypothe nufe and the other leg . Plate 3. fig . 43 . Ex . 1. In the triangle ABC , right - angled at B , fuppofe AB 300 equal parts , as feet , yards , miles , & c . , and the angle at A 30 ° 40 ° , ( and ...
... legs given , to find the hypothe nufe and the other leg . Plate 3. fig . 43 . Ex . 1. In the triangle ABC , right - angled at B , fuppofe AB 300 equal parts , as feet , yards , miles , & c . , and the angle at A 30 ° 40 ° , ( and ...
Side 33
... legs . In the triangle ABC , right angled at B. suppose AC 568 c- qual parts , angle A 39 ° 14 ′ , and angle C 50 ° 46 ' . Required AB , BC . Fig . 44. plate 3 . Variety 1. Making AB radius , BC becomes the tangent , and AG the fecant ...
... legs . In the triangle ABC , right angled at B. suppose AC 568 c- qual parts , angle A 39 ° 14 ′ , and angle C 50 ° 46 ' . Required AB , BC . Fig . 44. plate 3 . Variety 1. Making AB radius , BC becomes the tangent , and AG the fecant ...
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Vanlige uttrykk og setninger
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Populære avsnitt
Side 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.
Side 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.
Side 3 - A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference.
Side 232 - E, is equal to twice as many right angles as the figure has sides, less four right angles.
Side 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.
Side 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.
Side 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...
Side 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.
Side 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...
Side 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...