https://www.imcos.org/43rd-imcos-symposium-in-japan/
43rd IMCoS Symposium in Japan - IMCOS
in japanimcossymposium
https://api.onlyoffice.com/docs/office-api/usage-api/spreadsheet-api/ApiWorksheetFunction/Methods/IMCOS/
IMCOS | ONLYOFFICE
Returns the cosine of a complex number.
imcosonlyoffice