ATAN(x) 用于返回 x 的反正切,即正切为 x 的值
mysql> SELECT ATAN(0.30933624960962325), ATAN(1); +---------------------------+--------------------+ | ATAN(0.30933624960962325) | ATAN(1) | +---------------------------+--------------------+ | 0.3 | 0.7853981633974483 | +---------------------------+--------------------+
时间: 2024-10-12 20:29:13