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ASIN(x)

ASIN(x) 用于返回 x 的反正弦,即正弦为 x 的值

mysql> SELECT ASIN(0.8414709848078965), ASIN(3);+--------------------------+---------+| ASIN(0.8414709848078965) | ASIN(3) |+--------------------------+---------+|                        1 |    NULL |+--------------------------+---------+

 

 

 

   

ASIN(x)