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 |
Dentro del libro
Página 38
Angles of more than 90 degrees are usually taken off at twice . PROBLEM III . To measure a given angle A. Fig . 34 . Describe the arc mn with the chord of 60 degrees , as in the last problem . Take the arc mn between the dividers ...
Angles of more than 90 degrees are usually taken off at twice . PROBLEM III . To measure a given angle A. Fig . 34 . Describe the arc mn with the chord of 60 degrees , as in the last problem . Take the arc mn between the dividers ...
Página 67
Or by logarithms thus , From twice the logarithm of the perpendicular , subtract the logarithm of the base , and add the corresponding natural number to the base ; then , half the sum of the logarithms of this sum , and of the base ...
Or by logarithms thus , From twice the logarithm of the perpendicular , subtract the logarithm of the base , and add the corresponding natural number to the base ; then , half the sum of the logarithms of this sum , and of the base ...
Página 90
A :: AC X AB : CD X AB ; but CD X AB is equal to twice the area : 2. What is the area of a triangle two sides of the triangle : hence the truth of the rule is evident . 90 MEASURING LAND .
A :: AC X AB : CD X AB ; but CD X AB is equal to twice the area : 2. What is the area of a triangle two sides of the triangle : hence the truth of the rule is evident . 90 MEASURING LAND .
Página 93
But since twice AD , twice BD , and twice CF are the sum of the sides of the triangle , or twice AH , it is obvious that AD , BD and CF together , are equal to AH ; consequently CF is equal to BH or BM ; hence CM or CL is equal to BF or ...
But since twice AD , twice BD , and twice CF are the sum of the sides of the triangle , or twice AH , it is obvious that AD , BD and CF together , are equal to AH ; consequently CF is equal to BH or BM ; hence CM or CL is equal to BF or ...
Página 103
If two pins be set upright in a plane , and a thread , the length of which is greater than twice the distance between the pins , having the ends tied together be put about the pins ; and if the point of a pin or pencil , applied to the ...
If two pins be set upright in a plane , and a thread , the length of which is greater than twice the distance between the pins , having the ends tied together be put about the pins ; and if the point of a pin or pencil , applied to the ...
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Términos y frases comunes
ABCD ABFD acres adjacent adjacent angles angle ABC angle opposite angled triangle base bearing and distance breadth Calculation centre Co-secant Co-sine Co-tang column decimal Deg Dist degrees DEMONSTRATION Dep Lat departure corresponding diff difference of latitude divide division line draw equal EXAMPLES feet figures find the angle find the area four-pole chains fourth term given angle given area given bearing given ratio given side John Gummere Lat Dep latitude and departure length logarithm measured meridian distance natural number off-sets parallel parallelogram perches perpendicular perpendicular BC quired quotient radius rectangle remainder Required the area right angle right line right-angled triangle RULE Secant semiperimeter side AB side AC sine square root station stationary line subtract survey tance Tang Tangent tract of land trapezium trapezoid triangle ABC trigonometry ܟܬ
Información bibliográfica
| Título | 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 Schools |
| Autor | John Gummere |
| Edición | 3 |
| Editor | Kimber and Sharpless, no. 93, Market Street, and John Richardson, no. 244, Market Street., 1820 |
| Procedencia del original | Biblioteca Pública de Nueva York |
| Digitalizado | 12 Abr. 2011 |
| Largo | 206 páginas |
| Exportar cita | BiBTeX EndNote RefMan |