Plane Trigonometry

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    THIS volume has been written essentially to suit conditions in Indian colleges. The author claims that his treatment has greater vigour and comprehensiveness than is to be found in many of the existing textbooks written for use in English schools. It is a little difficult to see precisely wherein the real divergence lies, for the book begins, as usual, with the measurement of angles, the use of signs in geometry and orthogonal projection. It then covers the customary groundwork up to the properties of triangles and quadrilaterals. There are also short chapters on finite series and products, elimination and limits. It seems strange to divorce elimination from equations, yet the latter comes roughly in the middle of the book, whilst the former is relegated to Chap. xx.—the last but one !

    Plane Trigonometry.

    By B. B. Bagi. Pp. vii + 248. (Dharwar: The Author, Reddy Housing Society, 1931.) n.p.

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    Plane Trigonometry . Nature 129, 44 (1932) doi:10.1038/129044b0

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