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 |
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Página 29
... divided by any other numbers than themselves and unity . RULE For computing the Logarithms of Numbers . * Let the sum of its proposed number and the next less num- ber be called A. Divide 0.8685889638+ by A , and reserve The number ...
... divided by any other numbers than themselves and unity . RULE For computing the Logarithms of Numbers . * Let the sum of its proposed number and the next less num- ber be called A. Divide 0.8685889638+ by A , and reserve The number ...
Página 30
... divided by 2.3025850929933 ( the hyperbolic log . of 10 ) , or multiplied by its reciprocal , .4342944819 , give the common logarithms to be inserted in the table . Note . For further illustration on this subject , the reader is ...
... divided by 2.3025850929933 ( the hyperbolic log . of 10 ) , or multiplied by its reciprocal , .4342944819 , give the common logarithms to be inserted in the table . Note . For further illustration on this subject , the reader is ...
Página 36
... divided by 1728 , by loga- rithms . Ans . .0723379 6. Divide 1728.95 by 1.10678 , by logarithms . Ans . 1562.144 7. Divide .067859 by 1234.59 , by logarithms . Ans . .0000549648 8. Divide .7438 by 12.9470 , by logarithms . Ans . .057449 ...
... divided by 1728 , by loga- rithms . Ans . .0723379 6. Divide 1728.95 by 1.10678 , by logarithms . Ans . 1562.144 7. Divide .067859 by 1234.59 , by logarithms . Ans . .0000549648 8. Divide .7438 by 12.9470 , by logarithms . Ans . .057449 ...
Página 39
... divided is negative , and does not exactly contain the divisor without some remainder , increase the index by such a number as will make it exactly divisible by the index , carrying the units borrowed as so many tens to the left - hand ...
... divided is negative , and does not exactly contain the divisor without some remainder , increase the index by such a number as will make it exactly divisible by the index , carrying the units borrowed as so many tens to the left - hand ...
Página 40
... divided by 3 gives .8937471 ; therefore , 2.8937471 is the log . of the root . 6. To find the fourth root of .967845 , by logarithms . Ans . .9918624 . 7. To find the cube root of 2.987635 . Ans . 1.440265 . 8. To find the cube root of ...
... divided by 3 gives .8937471 ; therefore , 2.8937471 is the log . of the root . 6. To find the fourth root of .967845 , by logarithms . Ans . .9918624 . 7. To find the cube root of 2.987635 . Ans . 1.440265 . 8. To find the cube root of ...
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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.