VMS Help RTL Routines, MTH$, MTH$CCOS  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    The Cosine of a Complex Number (F-Floating Value) routine returns
    the cosine of a complex number as an F-floating value.

    Format

      MTH$CCOS  complex-number

  Additional Information (explode) :

• Returns
• Argument