Coordinates for the vertices are read from trigonometry tables using control
sequences
<BR>
<tex2html_image_mark>#defs335#
<BR>
which expand to the values of <tex2html_verbatim_mark>#math370#cos<tex2html_image_mark>#tex2html_wrap_inline1268#, <tex2html_verbatim_mark>#math371#sin<tex2html_image_mark>#tex2html_wrap_inline1270#,
<tex2html_verbatim_mark>#math372#cos<tex2html_image_mark>#tex2html_wrap_inline1272#, ..., <tex2html_verbatim_mark>#math373#sin<tex2html_image_mark>#tex2html_wrap_inline1274# and are also available for
other uses. The parameter~<I>n</I> must be a non-negative integer up to~12.
The complete table is in figure~??[f.trigonometry].