The Field Engineer: A Handy Book of Practice in the Survey, Location, and Track-work of Railroads; Containing a Large Collection of Rules and Tables, Original and Selected, Applicable to Both the Standard and the Narrow Gauge, and Prepared with Special Reference to the Wants of the Young EngineerD. Van Nostrand Company, 1890 - 339 páginas |
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Página 11
... sine of an angle is the distance from one extremity of the arc enclosing it , to the diameter , through the other extrem- ity . Thus PM is the sine of the angle M O A. = The cosine of an angle is the sine of the complement of the angle ...
... sine of an angle is the distance from one extremity of the arc enclosing it , to the diameter , through the other extrem- ity . Thus PM is the sine of the angle M O A. = The cosine of an angle is the sine of the complement of the angle ...
Página 12
... sine of A , cos . A for the cosine of A , & c . 6. The above definitions have been made with reference to a radius of 1. Any function of an arc whose radius is R is equal to the corresponding function of an arc whose radius is 1 ...
... sine of A , cos . A for the cosine of A , & c . 6. The above definitions have been made with reference to a radius of 1. Any function of an arc whose radius is R is equal to the corresponding function of an arc whose radius is 1 ...
Página 13
... sine , cosine , tang . , or cotang . , as the case may be ; the number there found is the logarithm sought . Thus , log . sin . 19 ° 55 ' . log . tang . 19 ° 55 ' . • • . · 9.532312 9.559097 3. If the angle is greater than 45 ° , look ...
... sine , cosine , tang . , or cotang . , as the case may be ; the number there found is the logarithm sought . Thus , log . sin . 19 ° 55 ' . log . tang . 19 ° 55 ' . • • . · 9.532312 9.559097 3. If the angle is greater than 45 ° , look ...
Página 14
... sine 40 ° 26 ' Tabular diff . • 2.47 No. of seconds , 28 Product 69.16 to be added . · Log . sine 40 ° 26 ' 28 " 9.811952 69 9.812021 5. If the arc is greater than 90 ° , find the required function of its supplement . Thus the ...
... sine 40 ° 26 ' Tabular diff . • 2.47 No. of seconds , 28 Product 69.16 to be added . · Log . sine 40 ° 26 ' 28 " 9.811952 69 9.812021 5. If the arc is greater than 90 ° , find the required function of its supplement . Thus the ...
Página 15
... sine of the angle opposite to that leg . And one of the legs is to the other as the radius to the tan- gent of the angle opposite to the latter . 2. In any plane triangle , as one of the sides is to another , so is the sine of the angle ...
... sine of the angle opposite to that leg . And one of the legs is to the other as the radius to the tan- gent of the angle opposite to the latter . 2. In any plane triangle , as one of the sides is to another , so is the sine of the angle ...
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Términos y frases comunes
A. D. MIN adjustment apex distance backsight called central angle CHORD column Cosine 1 Sine cross-hair Cube Roots decimal deflection distance degree of curvature degree of curve Diff divided engineer equal error Example feet figure fixed FOOD foregoing formation slope frog angle gauge of track gauge side ground Hence inches index angle instrument height intersection angle located logarithm Main frog dist mantissa mark measure method metres metric curve middle frog middle ordinate middle point minutes multiplied natural sine number corresponding observation opposite outer rail parallel perpendicular plane triangle Polaris quotient radii radius range REVERSED CURVE rule Sine 1 Cotang Square Roots sub-chord subtended Subtract Suppose switch-rail Table XVI tabular tance Tang tangential angle tangential distance telescope terminal tangent tion toe of switch transitman Trigonometry turnout curve vernier vertical ΙΟ