A Treatise of Practical Surveying: Which is Demonstrated from Its First Principles. Wherein Every Thing that is Useful and Curious in that Art, is Fully Considered and Explained ... The Whole Illustrated with CopperplatesP. Wogan, 1795 - 319 σελίδες |
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Σελίδα
... be conftrued as an Intention in me to take from his great Merit , when I fay , that the Methods herein contained are much more con- cife and ready than his Section Section the fixth contains the Nature of Off - fets PREFACE .
... be conftrued as an Intention in me to take from his great Merit , when I fay , that the Methods herein contained are much more con- cife and ready than his Section Section the fixth contains the Nature of Off - fets PREFACE .
Σελίδα 5
... contain of Cyphers , it follows , that the Places of Decimals in the Product , will be as many as in the Numbers from whence it arofe . EXAMPLES . Multiply 48.765 by .003609 .003609 438885 292590 146295 Anfwer 175992885 Multiply .121 by ...
... contain of Cyphers , it follows , that the Places of Decimals in the Product , will be as many as in the Numbers from whence it arofe . EXAMPLES . Multiply 48.765 by .003609 .003609 438885 292590 146295 Anfwer 175992885 Multiply .121 by ...
Σελίδα 6
... contained under the Divifor and Quotient ; and that Product contains as many Places of Decimals as the Numbers do from whence it arofe : Therefore the Difference between the Number of Decimals in the Dividend and Divi- for , must be cut ...
... contained under the Divifor and Quotient ; and that Product contains as many Places of Decimals as the Numbers do from whence it arofe : Therefore the Difference between the Number of Decimals in the Dividend and Divi- for , must be cut ...
Σελίδα 9
... contained in the Integer , and the Product will be the Number of fuch Parts as are ex- preffed by the Fraction . What is the Value of .25 of a Pound Sterling ? 20 Anfwer Shillings 5.00 C For 25 For 25 or 2 % of one Pound , DECIMAL ...
... contained in the Integer , and the Product will be the Number of fuch Parts as are ex- preffed by the Fraction . What is the Value of .25 of a Pound Sterling ? 20 Anfwer Shillings 5.00 C For 25 For 25 or 2 % of one Pound , DECIMAL ...
Σελίδα 12
... contained 4 Times , we annex the 4 to the Divifor and Quotient ; the then Divifor 104 is multiplied by the laft Figure in the Quotient 4 , and the Product 416 is deducted from the Refol- vend 481 , to the Refidue whereof is annexed the ...
... contained 4 Times , we annex the 4 to the Divifor and Quotient ; the then Divifor 104 is multiplied by the laft Figure in the Quotient 4 , and the Product 416 is deducted from the Refol- vend 481 , to the Refidue whereof is annexed the ...
Συχνά εμφανιζόμενοι όροι και φράσεις
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Δημοφιλή αποσπάσματα
Σελίδα 13 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees; and each degree into 60 minutes, each minute into 60 seconds, and so on.
Σελίδα 88 - 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 56 - ... logarithm of that number. EXAMPLE. • Required, the logarithm of 365. Answer, 2.56229. And though most tables of logarithms run but to 10000, yet by them the log. of any number not exceeding 10,000,000 may be found, and on the contrary, the number to any such logarithm, thus : 1 Find the log. of the first four figures of the given number 2. Take that log. from the log: of the number next following, and note their difference, 3. Multiply that difference by the remaining figures of the given number...
Σελίδα 91 - In the triangle ABC, there is given AB 240, the angle A 46° 30', and BC 200, to find the angle C, being acute, the angle B, and the side AC.
Σελίδα 89 - ED. that is as the sum of the two sides AB and BC, is to their difference ; so is the tangent of half the sum of the two unknown angles A and C, to the tangent of half their difference.
Σελίδα 32 - KCML, the sum of the two parallelograms or square BCMH ; therefore the sum of the squares on AB and AC is equal to the square on BC.
Σελίδα 19 - Four quantities are said to be in proportion when the product of the extremes is equal to that of the means, thus if A multiplied by D, be equal to B multiplied by C, then A is said to be to B as C is to D. POSTULATES OR PETITIONS. 1 . That a right line may be drawn from any one given point to another. 2. That a right line may be produced or continued at pleasure. 3. That from any centre and with any radius, the circumference of a circle may be described.
Σελίδα 13 - A chord is a right line drawn from one end of an arc or arch (that is, any part of the circumference of a circle) to the other ; and is the measure of the arc. Thus the right line HG, is the measure of the arc HBG.
Σελίδα 72 - ... these three proportions, for DE we put its equal be, for AE put ab, and for AD put ac, they will become AB : ab : : AC : ас, and AB : ab : : BC : be, and AC : ac : : BC : be.
Σελίδα 285 - Then if the true and magnetic amplitudes, be both north or both south, their difference is the variation ; but if one be north and the other south, their sum is the variation ; and to know whether it be easterly or westerly, suppose the observer looking...