Four Place Tables of Logarithms and Trigonometric Functions: With Auxiliary Tables (Chiefly to Three Figures) Of Squares, Square Roots, Cubes, Cube ... Natural Logarithms, Radians, and Con - Softcover

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Excerpt from Four Place Tables of Logarithms and Trigonometric Functions: With Auxiliary Tables (Chiefly to Three Figures) Of Squares, Square Roots, Cubes, Cube Roots, Reciprocals, Circumferences and Areas of Circles, Exponentials, Natural Logarithms, Radians, and Constants

Descriptive. Note. In these tables, angles are expressed in degrees and decimal parts of a degree, instead of in degrees, minutes, and seconds. A conversion table is provided.

All the values of any one function, from 0° to will be found at one opening of the book; there are also special tables for small angles and angles near The arrangement of the page is uniform, - the first figures of the argument being given at the side of the page, and the last figure along the top. Moreover, the function always increases reading to the right, and decreases reading to the left, so that a frequent cause of error in interpolating is avoided.

The sign I indicates a point where the first figure of the function changes in the middle of a line. The negative characteristics, I, 5, etc. May be modified into 9 - 10, 8 - 10, etc., if preferred.

To facilitate interpolation, the tenths of the tabular differences are given at the end of each line, so that the actual differences themselves need not be considered. In using these aids, first find the nearest tabular entry, and then add (to move to the right) or subtract (to move to the left), as the case may require. Any interpolated value may be in error by one unit in the last place wherever the errors of interpolation may be greater than this, warning is given in the margin.

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