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 Fine 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 ...O. D. Cooke, 1813 - 168 páginas |
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Página 5
... course of his practice , for the solution of which no particular directions are here given ; nor is it pos- sible to give directions for every case that may occur . In all practical Sciences much must be left to the judg- ment of the ...
... course of his practice , for the solution of which no particular directions are here given ; nor is it pos- sible to give directions for every case that may occur . In all practical Sciences much must be left to the judg- ment of the ...
Página 8
... Course and Distance of dividing Lines , or from one part of a Field to another . To this is added an Appendix concerning the Variation of the Compass and Attraction of the Needle ; also , a Rule to find the difference between the ...
... Course and Distance of dividing Lines , or from one part of a Field to another . To this is added an Appendix concerning the Variation of the Compass and Attraction of the Needle ; also , a Rule to find the difference between the ...
Página 41
... Courses of the Sides , or the Quantity of the several Angies , as found by a Compass , or other instrument for that purpose ; together with such re- marks as the Surveyor thinks proper to make in the Field . CASE I. To survey a ...
... Courses of the Sides , or the Quantity of the several Angies , as found by a Compass , or other instrument for that purpose ; together with such re- marks as the Surveyor thinks proper to make in the Field . CASE I. To survey a ...
Página 46
... Course with a Compass ; * enter these in a Field Book ; plot the Field on Paper , and calculate the Area by the directions already given . To protract or draw a Map of a Field . Draw a Line to represent a Meridian or North and South ...
... Course with a Compass ; * enter these in a Field Book ; plot the Field on Paper , and calculate the Area by the directions already given . To protract or draw a Map of a Field . Draw a Line to represent a Meridian or North and South ...
Página 48
... Course or Bearing of one of the Sides is Northerly and the other Southerly , one East- erly and the other Westerly subtract the less Course from the greater ; the Remainder will be the Angle between them . RULE 2. If one is Northerly ...
... Course or Bearing of one of the Sides is Northerly and the other Southerly , one East- erly and the other Westerly subtract the less Course from the greater ; the Remainder will be the Angle between them . RULE 2. If one is Northerly ...
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A System of Geometry and Trigonometry: Together with a Treatise on Surveying ... Able Flint Sin vista previa disponible - 2017 |
A System of Geometry and Trigonometry: Together with a Treatise on Surveying ... Able Flint Sin vista previa disponible - 2017 |
Pasajes populares
Página 26 - 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 23 - The square of the hypothenuse is equal to the sum of the squares of the other two sides ; as, 5033 402+302.
Página 8 - 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, &c.
Página 25 - TO THEIR DIFFERENCE ; So IS THE TANGENT OF HALF THE SUM OF THE OPPOSITE ANGLES', To THE TANGENT OF HALF THEIR DIFFERENCE.
Página 25 - The solution of this CASE depends on the following PROPOSITION. In every Plane Triangle, As the Sum of any two Sides ; Is to their Difference ; So is the Tangent of half the Sum of the two opposite Angles ; To the Tangent of half the Difference between them. Add this half difference to half the Sum of the Angles and you will have the greater Angle ; and...
Página 8 - The radius of a circle is a line drawn from the centre to the circumference, as A, B.
Página 40 - 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 40 - 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.