Function: cos(minus(numbers("per") if numbers("per") if numbers('rrr') > numbers('xry') else numbers('epe') if numbers("per") > numbers('epe') else numbers('rrr') > numbers('epe') else numbers('rrr') if numbers('xry') > numbers('epe') else numbers("per"), numbers('epe') if numbers('rrr') > numbers('epe') if numbers("per") > numbers('rrr') else numbers('xry') else numbers("per")))
