The Theory and Practice of Surveying: Containing All the Instructions Requisite for the Skilful Practice of this Art. With a New Set of Accurate Mathematical TablesA. S. Barnes, 1839 - 412 páginas |
Dentro del libro
Resultados 1-5 de 82
Página 11
... measuring land , and of delineating its boundaries on a map . The Surveyor , in the practice of this art , directs his attention , at first , to the tracing and measuring of lines ; secondly , to the position of these lines in respect ...
... measuring land , and of delineating its boundaries on a map . The Surveyor , in the practice of this art , directs his attention , at first , to the tracing and measuring of lines ; secondly , to the position of these lines in respect ...
Página 41
... measure of the arc . Thus the right line HG is the measure of the arc HBG , fig 8 . 18. The segment of a circle is any part thereof which is cut off by a chord thus the space which is comprehended between : hended between the said chord ...
... measure of the arc . Thus the right line HG is the measure of the arc HBG , fig 8 . 18. The segment of a circle is any part thereof which is cut off by a chord thus the space which is comprehended between : hended between the said chord ...
Página 43
... measure the arc is ; thus , because the arc HB is the measure of the angle HCB , and since HL is the sine , BK the tangent , and CK the secant , BL the versed sine , HF the co - sine , DI'the co - tangent , and CI the co - seeant , & c ...
... measure the arc is ; thus , because the arc HB is the measure of the angle HCB , and since HL is the sine , BK the tangent , and CK the secant , BL the versed sine , HF the co - sine , DI'the co - tangent , and CI the co - seeant , & c ...
Página 48
... measuring angles in general , has rendered the most important services to geography and navigation . THEOREM V. PL . 1. fig . 23 . In any triangle ABC , all the three angles , taken together , are equal to two right angles , viz . A + B ...
... measuring angles in general , has rendered the most important services to geography and navigation . THEOREM V. PL . 1. fig . 23 . In any triangle ABC , all the three angles , taken together , are equal to two right angles , viz . A + B ...
Página 49
... measured by half the arc it subtends or stands on . Fig . 26 . Cor . 2. Hence all angles at the circumference of a circle which stand on the same chord as AB are equal to each other , for they are ... measure of the angle ABC . THEOREMS . 49.
... measured by half the arc it subtends or stands on . Fig . 26 . Cor . 2. Hence all angles at the circumference of a circle which stand on the same chord as AB are equal to each other , for they are ... measure of the angle ABC . THEOREMS . 49.
Otras ediciones - Ver todas
Términos y frases comunes
ABCD acres altitude arch base bearing blank line centre chains and links circle circumferentor column compasses contained Cosine Sine cube root decimal diagonal diameter difference of latitude divided divisions divisor draw east ecliptic edge EXAMPLE feet field-book figure four-pole chains geometrical series given angle given number half the sum height Hence horizon glass hypothenuse inches instrument length logarithm manner measure meridian distance multiplied needle nonius number of degrees object observed opposite parallelogram perches perpendicular plane prob PROBLEM proportion protractor quadrant quotient radius rhombus right angles right line scale of equal screw secant sect sector semicircle side Sine Cotang square root station stationary distance subtract suppose survey taken Tang tangent theo theodolite THEOREM trapezium triangle ABC trigonometry two-pole chains vane vulgar fraction whence
Pasajes populares
Página 49 - The angle in a semicircle is a right angle ; the angle in a segment greater than a semicircle is less than a right angle ; and the angle in a segment less than a semicircle is greater than a right angle.
Página 41 - 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 41 - The radius of a circle is a right line drawn from the centre to the circumference.
Página 45 - A lemma is something which is premised, or demonstrated, in order to render what follows more easy. A corollary is a consequent truth derived immediately from some preceding truth or demonstration.
Página 35 - DIVISION BY LOGARITHMS. RULE. From the logarithm of the dividend subtract the logarithm of the divisor, and the number answering to the remainder will be the quotient required.
Página 21 - Then multiply the second and third terms together, and divide the product by the first term: the quotient will be the fourth term, or answer.