Trigonometry / Zill, Dennis G., Dewar, Jacqueline M. Zill, Dennis G., 1940- Dewar, Jacqueline M. Trigonometry. QA531 .Z55 2012 516.24 22 ZIT Includes index. Sudbury, Mass. : Jones & Bartlett Learning, c2012. c2012. 2012 Text xvi, 342, [46] p. : eng