Black Friday: lifetime access is on a special offer in the app, until November 30. Black Friday: special offer on lifetime access, until November 30. Download
극좌표를 사용하여 점의 위치를 나타낼 수 있습니다.geukjwapyoreul sayonghayeo jeomui wisireul natanal su itsseumnida.You can represent the position of a point using polar coordinates.