Introduction to Use of Logarithms

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D. Appleton, 1884 - 93 pages
 

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Page xii - To Divide One Number by Another, Subtract the logarithm of the divisor from the logarithm of the dividend, and obtain the antilogarithm of the difference.
Page xix - NB In the following table, in the last nine columns of each page, where the first or leading figures change from 9's to O's, points or dots are introduced instead of the O's...
Page 51 - But if the aiigle is between 45° and 90°, look for the degrees and the title of the column, at the bottom ; and for the minutes on the right. The Secants and Cosecants, which are not inserted in this table, may be easily supplied.
Page 51 - The Secants and Cosecants, which are not inserted in this table, may be easily supplied. If 1 be divided by the cosine of an arc, the quotient will be the secant of that arc.
Page 60 - I 0 Cosine. Sine. Cosine. Sine. Cosine. Sine. Cosine. Sine. Cosine. Sine.
Page 42 - Sine. D. Cosine. D. Tang. D. Cotang.
Page 28 - Cosine. D. Sine. D. Cotang. D. Tang.
Page 56 - Cosine Sine Cosine Sine Cosine Sine Cosine Sine Cosine Sine / 69° 68°...
Page vi - The characteristic с of log ./V is the number of places from the first significant figure to the units place, being positive if the first significant figure is to the left of the units place, zero if it is at the units place, and negative if it is to the right of the units place. EXAMPLE 1. The characteristic of log 2156 is 3, since 3 significant figures are to the left of the units...
Page iii - ... developed as the work progresses. From the above rules and previous statements, it may be concluded that logarithmic work must concern itself largely with the exponents; and that whatever the exponents, the base (the letter 6) must remain unchanged. The logarithm of a number is the exponent indicating the power to which some fixed number must be raised in order to equal the given number. The algebraic statement of this definition is b* = N The logarithmic statement of this definition is x...

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