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 ...

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D. van Nostrand, 1880 - 318 sider
 

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Side 18 - ... the square of the hypothenuse is equal to the sum of the squares of the other two sides.
Side 4 - The logarithm of any power of a number is equal to the logarithm of the number multiplied by the exponent of the power.
Side 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
Side 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

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