The Field Engineer: A Handy Book of Practice in the Survey, Location, and Trackwork of Railroads; Containing ... Rules and Tables ... Applicable to ... the Standard and the Narrow Gauge ...D. van Nostrand, 1880 - 318 páginas |
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Página 12
... tangent of an angle is a right line which touches the enclosing arc at one extremity , and is limited by a right line drawn from the centre of the circle through the other extrem- ity : the sloping line which thus limits the tangent is ...
... tangent of an angle is a right line which touches the enclosing arc at one extremity , and is limited by a right line drawn from the centre of the circle through the other extrem- ity : the sloping line which thus limits the tangent is ...
Página 13
... tangents , or cotangents are re- ferred to a radius of 10,000,000,000 , of which the logarithm is 10 . TO FIND THE ... tangent , and subtract it therefrom for the cosine or cotangent . Example . Operation . Log . sine 40 ° 26 ' Tabular ...
... tangents , or cotangents are re- ferred to a radius of 10,000,000,000 , of which the logarithm is 10 . TO FIND THE ... tangent , and subtract it therefrom for the cosine or cotangent . Example . Operation . Log . sine 40 ° 26 ' Tabular ...
Página 14
... tangent of 118 ° 18 ′ 25 " , is equivalent to that of its supplement , or 61 ° 41 ′ 35 ′′ , and is 10.268732 . Also the logarithmic cosine of 95 ° 18 ' 24 " is 8.966080 , and the log . cot . of 126 ° 23 ′ 50 ′′ is 9.851619 . TO FIND THE ...
... tangent of 118 ° 18 ′ 25 " , is equivalent to that of its supplement , or 61 ° 41 ′ 35 ′′ , and is 10.268732 . Also the logarithmic cosine of 95 ° 18 ' 24 " is 8.966080 , and the log . cot . of 126 ° 23 ′ 50 ′′ is 9.851619 . TO FIND THE ...
Página 15
... tangent of half the sum of the angles at the base to the tangent of half their difference . 4. In any plane triangle , as the cosine of half the difference of the angles at the base is to the cosine of half their sum , so is the sum of ...
... tangent of half the sum of the angles at the base to the tangent of half their difference . 4. In any plane triangle , as the cosine of half the difference of the angles at the base is to the cosine of half their sum , so is the sum of ...
Página 17
... tangent of half the sum of the remaining angles to the tangent of half their difference . Half the sum of the remaining angles added to half their difference will give the larger of them , and half their sum diminished by half their ...
... tangent of half the sum of the remaining angles to the tangent of half their difference . Half the sum of the remaining angles added to half their difference will give the larger of them , and half their sum diminished by half their ...
Otras ediciones - Ver todas
The Field Engineer: A Handy Book of Practice in the Survey, Location and ... William F. Shunk Sin vista previa disponible - 2008 |
The Field Engineer: A Handy Book of Practice in the Survey, Location, and ... William Findlay Shunk Sin vista previa disponible - 2017 |
Términos y frases comunes
100 feet long 100-feet chords adjustment apex distance called central angle column Cosine 1 Sine Cotang cross-hair Cube Roots decimals deflection distance degree of curvature DEGREE OF CURVE Diff divided elevation engineer equal Example feet figure fixed foregoing frog angle Full Gauge gauge of track gauge side gent ground index angle instrument intersection angle length of switch-rail located logarithm M.
M. I Sine Main frog dist mantissa mark measure method middle frog middle ordinate middle point minutes Multiply observation outer rail parallel perpendicular quotient radii radius range Reciprocals REVERSED CURVE right triangle screws slope Square Roots standard gauge straight line sub-chord subtended Subtract Suppose Table XVI tabular tance Tang tangent A B tangential angle tangential distance telescope terminal tangent tion toe of switch Trigonometry turnout curve vernier versin vertical ΙΟ ΤΑΝ
Pasajes populares
Página 18 - ... the square of the hypothenuse is equal to the sum of the squares of the other two sides.
Página 4 - The logarithm of any power of a number is equal to the logarithm of the number multiplied by the exponent of the power.
Página 11 - ... is supposed to be divided into 60 equal parts, called minutes; and each minute into 60 equal parts, called seconds. Degrees, minutes, and seconds, are designated respectively, by the characters ° ' ". For example, ten degrees, eighteen minutes, and fourteen seconds, would be written 10° 18
Página 4 - The logarithm of the product of two numbers is equal to the sum of the logarithms of the numbers. log» MN = log» M + log