Abstract
IN this volume the authors “have tried to recapture the spirit of some of the writers of a few generations ago who looked on Trigonometry as a branch of applied rather than of pure mathematics”. The course mapped out is therefore different in many ways from that found in most other textbooks. Great stress is laid on “the kind of calculations and manipulations of trigonometric expressions that occur in the applications of the subject”. Theory is not neglected, but it only enters where it is necessary to establish practical formulæ. The scope is fairly wide and includes an excellent section on mensuration and solid geometry. A welcome feature is the introduction of radian measure at the beginning.
Elementary Trigonometry.
By Dr. John Prescott H. V. Lowry. Pp. xi + 444. (London, New York and Toronto: Longmans, Green and Co., Ltd., 1932.) 5s.
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Elementary Trigonometry . Nature 131, 420 (1933). https://doi.org/10.1038/131420a0
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DOI: https://doi.org/10.1038/131420a0