A System of Geometry and Trigonometry: Together with a Treatise on Surveying : Teaching Various Ways of Taking the Survey of a Field : Also to Protract the Same and Find the Area : Likewise, Rectangular Surveying, Or, an Accurate Method of Calculating the Area of Any Field Arithmetically, Without the Necessity of Plotting it : to the Whole are Added Several Mathematical Tables, with a Particular Explanation and the Manner of Using Them : Compiled from Various AuthorsOliver D. Cooke, 1808 - 168 páginas |
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Página 9
... are called Right Angles ; and the Line CD is said to be Perpendicular to the other Line . 8. An Obtuse Angle is greater than a Right Angle ; as ADE . Fig . 3 . B 4 9. An Acute Angle is less than a Right GEOMETRY. ...
... are called Right Angles ; and the Line CD is said to be Perpendicular to the other Line . 8. An Obtuse Angle is greater than a Right Angle ; as ADE . Fig . 3 . B 4 9. An Acute Angle is less than a Right GEOMETRY. ...
Página 12
... greater or less accord- ing to the opening of the Lines which form it , or as the Arch intercepted by those Lines contains more or fewer Degrees . Hence it may be observ- ed , that the bigness of an Angle does not depend at all upon the ...
... greater or less accord- ing to the opening of the Lines which form it , or as the Arch intercepted by those Lines contains more or fewer Degrees . Hence it may be observ- ed , that the bigness of an Angle does not depend at all upon the ...
Página 16
... greater than a Quadrant ; set off 90 Degrees from B to C , and from C to E set off the excess above 90 , which is 20 ; draw a Line from G through E and the Angle will contain 110 Degrees . Note . In a similar manner Angles may be ...
... greater than a Quadrant ; set off 90 Degrees from B to C , and from C to E set off the excess above 90 , which is 20 ; draw a Line from G through E and the Angle will contain 110 Degrees . Note . In a similar manner Angles may be ...
Página 24
... greater number than 5 is more than half . As the Table of Artificial or Logarithmic Sines , Tangents and Secants , contained in this Book , is calcu- lated only for every 5 Minutes of a Degree , whenever any Question is to be solved ...
... greater number than 5 is more than half . As the Table of Artificial or Logarithmic Sines , Tangents and Secants , contained in this Book , is calcu- lated only for every 5 Minutes of a Degree , whenever any Question is to be solved ...
Página 29
... greater number of Degrees will be as much less as that number of Degrees exceeds 90 ; and will be the same as the Sine of the Supple- ment of that number of Degrees : Thus the Sine of 100 ° is the same as the Sine of 80 ° , and the Sine ...
... greater number of Degrees will be as much less as that number of Degrees exceeds 90 ; and will be the same as the Sine of the Supple- ment of that number of Degrees : Thus the Sine of 100 ° is the same as the Sine of 80 ° , and the Sine ...
Otras ediciones - Ver todas
System of Geometry and Trigonometry: Together with a Treatise on Surveying ... Abel Flint Sin vista previa disponible - 2017 |
System of Geometry and Trigonometry: Together With a Treatise on Surveying ... Abel Flint Sin vista previa disponible - 2017 |
Términos y frases comunes
Angle opposite Bearing and Distance C.Tang Chord Circle Circumference Co-Sine Sine Compass contained Angle Decimals Degrees and Minutes Dep Lat Diagonal Difference Dist divided Doub Double Area double the Area draw a Line Draw the Line EXAMPLE FIELD BOOK find the Angles find the Area find the Leg given Leg given number given Side Lat Dep Latitude and Departure Leg AB Leg BC length Loga Logarithmic Sine measuring Meridian multiply Natural Sines North Areas Note number of Acres number of Degrees Offset opposite Angle Parallelogram PLATE Plot PROB PROBLEM protract Quotient Radius Remainder Rhombus Right Angled Triangle RULE Secant Co-Secant Side BC Sine Co-Sine Tangent Sine Sine Sine South Areas Square Chains Square Links Square Root stationary Lines subtract survey a Field Surveyor Table of Logarithms Table of Natural Tangent Co-Secant Secant Tangent or Secant Trapezium Trapezoid Triangle ABC TRIGONOMETRY
Pasajes populares
Página 10 - 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.
Página 31 - TO THEIR DIFFERENCE ; So IS THE TANGENT OF HALF THE SUM OF THE OPPOSITE ANGLES', To THE TANGENT OF HALF THEIR DIFFERENCE.
Página 32 - As the base or sum of the segments Is to the sum of the other two sides, So is the difference of those sides To the difference of the segments of the base.
Página 10 - The Radius of a circle is a line drawn from the centre to the circumference.
Página 78 - Go to any part of the premises where any two adjacent corners are known ; and if one can be seen from the other, take their bearing ; which, compared with that of the same line in the former survey, shows the difference. But if one corner cannot be seen from the other, run the line according to the given bearing, and observe the nearest distance between the line so run and the corner ; then...
Página 44 - Field work and protraction are truly taken and performed ; if not, an error must have been committed in one of them : In such cases make a second protraction ; if this agrees with the former, it is to be presumed the fault is in the Field work ; a re- survey must then be taken.
Página 14 - Figures which consist of more than four sides' are called polygons; if the sides are equal to each other they are called regular polygons, and are sometimes named from the number of their sides, as pentagon, or hexagon, a figure of five or six sides, &c.; if the sides are unequal, they are called irregular polygons.
Página 44 - Let his attention first be directed to the map, and inform him that the top is north, the bottom south, the right hand east, and the left hand west.
Página 27 - The square of the hypothenuse is equal to the sum of the squares of the other two sides ; as, 5033 402+302.
Página 39 - To find the area of a trapezoid. RULE. — Multiply half the sum of the parallel sides by the altitude, and the product is the area.