This book is the most complete collection of all "Four-digit mathematical tables" of sines, cosines, tangents, squares, logarithms, etc. ... A total of about twenty-two types. In it you will also find how to use the table. Using this brochure allows you to do without an engineering calculator in your calculations, with fairly high accuracy. As a rule, it is four decimal places, which is more than enough for complex technological calculations.
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