Over the years, the text has been shaped and adapted to meet the changing needs of both students and educators. As always, special care was taken to respond to the specific suggestions of users and reviewers through enhanced discussions, new and updated examples and exercises, helpful features, and an extensive package of supplements and study aids. The result is an easy-to-use, comprehensive text that is the best edition yet.John Hornsby is the author of 'Trigonometry (9th Edition)', published 2008 under ISBN 9780321528858 and ISBN 0321528859.
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