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Cloth. Condizione: Very Good+. No Jacket. First Edition, First Printing. The book is very good+ with slight shelf wear and slight bump to lower back corner. This is an unmarked and unstamped copy.

Condizione: Good. Good condition. Light wear. Binding tight, pages clean. No dust jacket. Pictures available upon request.? AP.

Hard Cover. Condizione: Good. Revised Edition. Previous Owner Markings; Repaired; Corners, Spine Bumped; Moderate Shelf Rub to Boards; Spine Slightly Cocked; Edges Moderately Soiled; Moderate Yellowing Due to Age. CONTENTS: CHAPTER I Trigonometric Ratios of an Acute Angle; CHAPTER II Trigonometric Ratios of Certain Angles: The Trigonometric Tables; CHAPTER III Solution of Right-Angled Triangles; CHAPTER IV Fundamental Relations and Identities; CHAPTER V Trigonometric Ratios of Any Angle; CHAPTER VI Trigonometric Functions of Related and Co-related Angles; CHAPTER VII Expansion Formulas for Compound and Multiple Angles; CHAPTER VIII Transformation Formulas for Sums and Products; CHAPTER IX The Solution of Oblique Triangles; Test Papers (Chapters I-IX); CHAPTER X Logarithms; CHAPTER XI Solution of Oblique Triangles Using Logarithms; CHAPTER XII Properties of Triangles and Polygons; CHAPTER XIII Trigonometric Equations and Inverse Notation; CHAPTER XIV Arcs of Circles-Angular Velocity; Test Papers (Chapters X-XIV); CHAPTER XV The Slide Rule; CHAPTER XVI Supplementary Topics; CHAPTER XVII Force; CHAPTER XVIII Composition and Resolution of Forces; CHAPTER XIX Moment of a Force: Parallel Forces; CHAPTER XX Conditions for Equilibrium; CHAPTER XXI Centre of Gravity; CHAPTER XXII Friction; CHAPTER XXIII Machines; Test Papers (Chapters XV-XXIII); Tables; Answers; Index. EXCERPT: Preface - The authors of this textbook have adopted the standard arrangement of topics, beginning with trigonometric ratios of acute angles and proceeding to the general treatment of any angle. It is believed that this order of presentation best meets the needs of students taking a first course in trigonometry, and that it provides the soundest foundation for further study in any of the many fields of science in which trigonometry is applied. In the application of trigonometry to problems of a practical nature, emphasis has been placed on developing skill in trigonometric computation before assessing too closely the accuracy of computed results. To this end, only a brief consideration is made of significant figures in the early stages of the work. However, in the third chapter, two simple rules are introduced for recording results without exhibiting an unreasonable degree of accuracy. A more detailed study of approximate numbers and accuracy in computation with approximate numbers is undertaken in Chapter Sixteen. The numerous worked examples are intended to assist the student in following the presentation, which has been made as simple and direct as possible. Review exercises, co-ordinating all principles developed in each chapter, are included as well. The three sets of Test Papers are planned to offer additional review prior to the Fall, Winter and Spring Examinations, respectively . . . Size: 8vo - over 7¾" - 9¾" tall.