ISBN 0071795359 books & textbook
Schaum's Outline of Trigonometry, 5th Edition: 618 Solved Problems + 20 Videos (Schaum's Outlines)
Moyer, Robert E. Ayres Jr., Frank
McGraw-Hill Education /2012-12-18 Paperback / 216 Pages
isbn-10: 0071795359 / isbn-13: 9780071795357
