A Synopsis of Practical Mathematics: Containing Plain Trigonometry; Mensuration of Heights, Distances, Surfaces, and Solids; Surveying of Land, Gauging, Navigation, and Gunnery. With Tables of the Logarithms of Numbers, and of Sines and Tangents. For the Use of Schools and Men of BusinessT. Cadell, London, and C. Elliot, Edinburgh, 1779 - 266 σελίδες |
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Αποτελέσματα 1 - 5 από τα 15.
Σελίδα 14
... Sides , Angles at the Center , and at the Circumference of regular Polygons , from three to twelve Sides , in- clufive . Sides . Ang at the Genter . Ang at the Circumf . Names . Trigon Square Pentagon 345 . 3 120 ° 00 ' 90 00 72 00 90 ...
... Sides , Angles at the Center , and at the Circumference of regular Polygons , from three to twelve Sides , in- clufive . Sides . Ang at the Genter . Ang at the Circumf . Names . Trigon Square Pentagon 345 . 3 120 ° 00 ' 90 00 72 00 90 ...
Σελίδα 21
... Sides , or Legs . 23. Plain triangles are either right angled , or ob- lique angled ; and each kind hath several cases . 24. Similar triangles are those which have their angles equal , each to its correspondent angle . The 25. The fides ...
... Sides , or Legs . 23. Plain triangles are either right angled , or ob- lique angled ; and each kind hath several cases . 24. Similar triangles are those which have their angles equal , each to its correspondent angle . The 25. The fides ...
Σελίδα 63
... side about 12 inches long , and some means be thought of to fix it on the top of a ftaff , either in a horizontal or vertical pofition , many problems may be folved by it . Fig . 3. plate 5 . In order to apply the triangle to the ...
... side about 12 inches long , and some means be thought of to fix it on the top of a ftaff , either in a horizontal or vertical pofition , many problems may be folved by it . Fig . 3. plate 5 . In order to apply the triangle to the ...
Σελίδα 71
... side , mark out the line EDCF by poles , and leave a pole at E. Then mea- fure from E until you come to the point D , where EDB is a right angle , and mark down the length of ED . Measure forward in the fame right line until you come to ...
... side , mark out the line EDCF by poles , and leave a pole at E. Then mea- fure from E until you come to the point D , where EDB is a right angle , and mark down the length of ED . Measure forward in the fame right line until you come to ...
Σελίδα 76
... side of the tri- angle ABC , as in AC . Fig . 9 . Find the angle ACB as before ; and , in the triangle SBC , the angles BCS , CSB , and the fide BC being known , SB , SC , and confequently SA , may be found . To find the point S , make ...
... side of the tri- angle ABC , as in AC . Fig . 9 . Find the angle ACB as before ; and , in the triangle SBC , the angles BCS , CSB , and the fide BC being known , SB , SC , and confequently SA , may be found . To find the point S , make ...
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A Synopsis of Practical Mathematics: Containing Plain Trigonometry ... Alexander Ewing Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2016 |
Συχνά εμφανιζόμενοι όροι και φράσεις
acres alfo alſo altitude amplitude angle ABC angle BAC anſwer arithmetical mean azimuth bafe baſe becauſe breadth chain circle circumference cofine Comp courfe courſe cubic inches defcribe Degrees diameter diff difference of latitude diſtance divide ecliptic elevation Engliſh equal EXAM fame fecant feconds fegment feries fhip from latitude fide AC fimilar find the angles find the area find the folidity find the logarithm firft folid content fome fouth fquare feet fquare links fquare root fruftum ftation fubtract fuch fun's fuperficies given globe half fum height horizontal latitude and departure lefs length longitude meaſure meridian miles multiply muſt Octahedron oppofite parallelogram perpendicular plain triangle pole PROB quotient radius regular polygon required to find right angled triangle right line roods ſcale Scots Sine ſquare Suppofe Tangent Tangent30 thefe theſe triangle ABC veffel weft whofe whoſe yards zone
Δημοφιλή αποσπάσματα
Σελίδα 258 - And in division, subtract the logarithm of the divisor from the logarithm of the dividend, the remainder is the logarithm of the quotient.
Σελίδα 259 - Rule. Multiply the Logarithm of the given number by the Index of the proposed power, and the product will be the Logarithm, whose natural number is the power required.
Σελίδα 18 - The diameter of a circle is a right line drawn through the centre, and terminating in the circumference on each side, as AB.
Σελίδα 177 - Circles are great circles which pass through the zenith and nadir, and cut the horizon at right angles.
Σελίδα 176 - Zone, between the Tropic of Cancer and the Arctic Circle, is called the North Temperate Zone, and...
Σελίδα 259 - Complement of a Logarithm. Begin at the left hand, and write down what each figure wants of 9, only what the laft fignificant figure wants of ю j fo the Сотр.
Σελίδα 18 - The sine of an arc is a line drawn from one end of the arc, perpendicular to the radius or diameter drawn through the other end : or, it is half the chord of double the arc ; thus HL is the sine of the arc HB.
Σελίδα 131 - Becaufe every cone is the third part of a cylinder of the fame bafe and altitude, Multiply the area of its bafe by one third part of its height ; the product is the foiidity.
Σελίδα 204 - ... 9" with the meridian. And 3dly. That the differences of longitude on different rumbs, are to one another as the tangents of the angles of those rumbs with the meridian. Hence it follows, that the difference of the log. tangents of the half complements of the latitudes, is to the difference of longitude a ship makes...
Σελίδα 256 - If the logarithm is not found exa£Uy in the tables, and more than four figures are required, fubtraft the logarithm found in the table from the given one, and divide the remainder by the difference between the logarithm found and the next greater ; the quotient joined to the four figures already found, gives the number anfwering to the logarithm. EXAMPLES. To find the number anfwering to the logarithm 2.7342957.