Function: tan(numbers('ryy') if numbers("xxx") > numbers('rrr') else numbers("per")) if numbers('rrr') if numbers("per") > numbers("xxx") else numbers('ryy') > minus(tan(numbers("per") if numbers("xxx") > numbers('rrr') else numbers('ryy')), numbers("xxx") if numbers('ryy') > numbers("per") else numbers('rrr')) else divide(minus(tan(numbers("per") if numbers('ryy') > numbers('rrr') else numbers("xxx")), numbers("xxx") if numbers("per") > numbers('ryy') else numbers('rrr')), tan(numbers('ryy') if numbers("xxx") > numbers('rrr') else numbers("per")))