Young, Cynthia Y. Trigonometry/ Cynthia Y. Young. - 2nd ed. - Hoboken, NJ: John Wiley & Sons, c2010. - 644 p.: ill.; 26 cm. Includes index ISBN: 978-9812-53311-1 Subjects--Topical Terms: Trigonometry. Dewey Class. No.: GC 516.24 Y68 2010