@MISC{SIN_COS2.MIZ,
  AUTHOR = {Mitsuishi, Takashi and Yang, Yuguang},
  TITLE = {Properties of the Trigonometric Function},
  SECTION1 = {Monotone Increasing and Monotone Decreasing of Sinus and Cosine},
  SECTION2 = {Hyperbolic Sinus, Hyperbolic Cosine and Hyperbolic Tangent},
  DAY = {13},
  MONTH = {March},
  YEAR = {1999},
  ADDRESS1 = {Shinshu University\\Nagano},
  ADDRESS2 = {Shinshu University\\Nagano},
  SUMMARY = {This article introduces the monotone increasing and the monotone decreasing of
 {\em sinus}
and {\em cosine}, and definitions of hyperbolic {\em sinus}, hyperbolic 
 {\em cosine} and
hyperbolic {\em tangent}, and some related formulas about them.}}

