returns the complex cosine . concode_field_sep double re concode_elem_sep double im concode_field_sep double phase concode_elem_sep Complex tan concode_elem_sep Complex minus concode_elem_sep double im concode_elem_sep Complex reciprocal concode_elem_sep Complex plus concode_elem_sep Complex div concode_elem_sep Complex conjugate concode_elem_sep Complex times concode_elem_sep Complex times concode_elem_sep double abs concode_elem_sep double re concode_elem_sep int hashCode concode_elem_sep boolean equals concode_elem_sep Complex sin concode_elem_sep String toString concode_elem_sep Complex exp
Complex function ( ) { return new Complex ( Math . cos ( re ) * Math . cosh ( im ) , - Math . sin ( re ) * Math . sinh ( im ) ) ; }