Gibilisco, Stan Trigonometry : demystified/ Stan Gibilisco - 2nd Edition - United States of America : McGraw-Hill, 2012. - vii, 418 pages : figures, tables; 23 cm. Includes Index. ISBN: 9780071780247 Subjects--Topical Terms: Trigonometry. Dewey Class. No.: 516.24 / G355t