Abstract
THIS volume, dealing mainly with analytical trigonometry, provides an excellent school course for senior scholars. It embraces the logarithmic, exponential, and hyperbolic functions expansion in power series projection and finite series, and complex numbers. No hesitation has been shown in using the methods of the calculus throughout, and a commendable feature is the development and application of the powerful principle of inequalities. The section devoted to complex numbers, occupying considerably more than half the book, is especially noteworthy for its clearness and sound treatment. As the authors point out, the interest and value of higher trigonometry lies in its being an introduction to modern analysis and, for this reason, the methods by which results are obtained are of more importance educationally than the results themselves. This is the basic principle upon which the book has been written.
Advanced Trigonometry.
By C. V. Durell A. Robson. Pp. viii + 335. (London: G. Bell and Sons, Ltd., 1930.) 8s. 6d.
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Advanced Trigonometry . Nature 128, 92 (1931). https://doi.org/10.1038/128092a0
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DOI: https://doi.org/10.1038/128092a0