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 TablesHarper, 1832 - 348 σελίδες |
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Σελίδα 7
... reduce a map from one scale to another ; also the manner of uniting separate maps of lands which join each other into one map of any assigned size . The seventh section contains the method of dividing land , or of taking off or ...
... reduce a map from one scale to another ; also the manner of uniting separate maps of lands which join each other into one map of any assigned size . The seventh section contains the method of dividing land , or of taking off or ...
Σελίδα 18
... REDUCTION OF DECIMALS . RULE I. To reduce a Vulgar Fraction to a Decimal of the same value . Having annexed a sufficient number of ciphers , as decimals , to the numerator of the vulgar fractions , divide by the denomi- nator ; and the ...
... REDUCTION OF DECIMALS . RULE I. To reduce a Vulgar Fraction to a Decimal of the same value . Having annexed a sufficient number of ciphers , as decimals , to the numerator of the vulgar fractions , divide by the denomi- nator ; and the ...
Σελίδα 19
... reduce likewise that quantity whose fraction is sought to the same denomina- tion , for the denominator of a vulgar fraction ; then divide as before directed . EXAMPLES . Reduce 9 inches to the decimal of a foot . The foot being equal ...
... reduce likewise that quantity whose fraction is sought to the same denomina- tion , for the denominator of a vulgar fraction ; then divide as before directed . EXAMPLES . Reduce 9 inches to the decimal of a foot . The foot being equal ...
Σελίδα 20
... of a mile ? 2 ft . 5 in . + Ans . 40 m . 58 sec . Ans . 1 per . 3 yds . What is the value of .036 of a day ? Ans . 51 ′ 50 ′′ 24 ′′ PROPORTION IN DECIMAL FRACTIONS . Having reduced all the fractional 20 DECIMAL FRACTIONS .
... of a mile ? 2 ft . 5 in . + Ans . 40 m . 58 sec . Ans . 1 per . 3 yds . What is the value of .036 of a day ? Ans . 51 ′ 50 ′′ 24 ′′ PROPORTION IN DECIMAL FRACTIONS . Having reduced all the fractional 20 DECIMAL FRACTIONS .
Σελίδα 21
... reduced all the fractional parts in the given quantities to their corresponding decimals , and having stated the three known terms , so that the fourth , or required quantity , may be as much greater or less than the third as the second ...
... reduced all the fractional parts in the given quantities to their corresponding decimals , and having stated the three known terms , so that the fourth , or required quantity , may be as much greater or less than the third as the second ...
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Συχνά εμφανιζόμενοι όροι και φράσεις
ABCD acres altitude arch azimuth base bearing blank line centre chains and links circle circumferentor co-sine column compasses contained 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 method multiplied needle nonius number of degrees object observed offsets opposite parallelogram perches perpendicular plane prob PROBLEM proportion protractor quadrant quotient radius rhombus right angles right line scale of equal SCHOLIUM screw secant sect sector semicircle side square root station stationary distance subtract suppose survey taken tangent theo theodolite THEOREM third trapezium triangle ABC trigonometry two-pole chains vane vulgar fraction whence
Δημοφιλή αποσπάσματα
Σελίδα 173 - In like manner, when it is said, that " triangles on the same base, and between the same parallels, are equal...
Σελίδα 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.
Σελίδα 163 - RULE. From half the sum of the three sides subtract each side severally.
Σελίδα 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.
Σελίδα 97 - C' (89) (90) (91) (92) (93) 112. In any plane triangle, the sum of any two sides is to their difference as the tangent of half the sum of the opposite angles is to the tangent of half their difference.
Σελίδα 41 - The radius of a circle is a right line drawn from the centre to the circumference.
Σελίδα 52 - Triangles upon equal bases, and between the same parallels, are equal to one another.
Σελίδα 24 - The square of the sum of two numbers is equal to the square of the first number plus twice the product of the first and second number plus the square of the second number.
Σελίδα 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.