@MISC{SIN_COS4.MIZ,
  AUTHOR = {Chanapat, Pacharapokin and , Kanchun and Yamazaki, Hiroshi},
  TITLE = {Formulas and Identities of Trigonometric Functions},
  DAY = {03},
  MONTH = {February},
  YEAR = {2004},
  ADDRESS1 = {Shinshu University\\Nagano},
  ADDRESS2 = {Shinshu University\\Nagano},
  ADDRESS3 = {Shinshu University\\Nagano},
  SUMMARY = {In this article, we concentrated especially on
  addition formulas of fundamental trigonometric functions,
  and their identities.}}

