A Treatise on Surveying,: Containing the Theory and Practice: : to which is Prefixed a Perspicuous System of Plane Trigonometry. : The Whole Clearly Demonstrated and Illustrated by a Large Number of Appropriate Examples. : Particularly Adapted to the Use of SchoolsKimber and Sharpless, no. 93, Market Street, and John Richardson, no. 244, Market Street., 1820 - 206 páginas |
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Página 14
If four figures only be required in the answer , look in the table for the decimal part of the given logarithm , and if it cannot be found exactly , take the one nearest to it , whether greater or less ; then the three figures in the ...
If four figures only be required in the answer , look in the table for the decimal part of the given logarithm , and if it cannot be found exactly , take the one nearest to it , whether greater or less ; then the three figures in the ...
Página 15
53899 Next less .53895 the natural number corresponding is 3459 Diff . with one cipher annexed 40 Next less log Next greater 53895 . 53908 C O Difference 13 / Divide 40 by 13 and the quotient will be 3 , which annexed to the right hand ...
53899 Next less .53895 the natural number corresponding is 3459 Diff . with one cipher annexed 40 Next less log Next greater 53895 . 53908 C O Difference 13 / Divide 40 by 13 and the quotient will be 3 , which annexed to the right hand ...
Página 26
An acute angle is that which is less than a right angle , as BDE , Fig . 4 . 11. An obtuse angle is that which is greater than a right angle , as ADE , Fig . 4 . 12. Parallel straight lines are those which are in the same plane ...
An acute angle is that which is less than a right angle , as BDE , Fig . 4 . 11. An obtuse angle is that which is greater than a right angle , as ADE , Fig . 4 . 12. Parallel straight lines are those which are in the same plane ...
Página 39
If the degrees in the given angle be less than 45 , look for them at the top of the table , and for the minutes , in the left hand column ; then in the column marked at PLANE TRIGONOMETRY . 39.
If the degrees in the given angle be less than 45 , look for them at the top of the table , and for the minutes , in the left hand column ; then in the column marked at PLANE TRIGONOMETRY . 39.
Página 53
... ACB , is to the tangent of half their difference . To demonstrate the latter part of the rule , let AC and AB , Fig . 46 , represent any two magnitudes whatever ; in AB produced , take BD equal to AC the less , and bisect AD in ...
... ACB , is to the tangent of half their difference . To demonstrate the latter part of the rule , let AC and AB , Fig . 46 , represent any two magnitudes whatever ; in AB produced , take BD equal to AC the less , and bisect AD in ...
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ABCD according acres adjacent angle base bearing bearing and distance Calculation called centre circle Co-secant Co-sine Co-tang column Construction contained corresponding Courses decimal Deg Dist DEMONSTRATION describe difference distance divide division draw east equal EXAMPLES feet figures find the area given given angle given area given side greater half hand height hypothenuse join latitude and departure length less logarithm measured meeting meridian distance Note off-sets opposite parallel perches perpendicular preceding PROBLEM quotient radius ratio rectangle remainder Required the area right angle right line root RULE running scale Secant side side AC sine square station subtract survey taken Tang Tangent triangle ABC twice