方ほう向こう余よ弦げんほうこうよげんじ字FuriganaMeanings1noundirection cosineMathematical term: the cosine of the angle between a vector and a coordinate axis. Used in vector analysis, physics, and engineering.方ほう向こう余よ弦げんはベクトルの向むきを表あらわすのに使つかわれる。