Syntax
ASIN(X)
Purpose
ASIN() returns the arc sine of X. If the value of X is outside the range of [-1,1], the function returns NULL.
Examples
obclient> SELECT ASIN(-10), ASIN(0), ASIN(10), ASIN(-0.5), ASIN(0.5);
+-----------+---------+----------+---------------------+--------------------+
| ASIN(-10) | ASIN(0) | ASIN(10) | ASIN(-0.5) | ASIN(0.5) |
+-----------+---------+----------+---------------------+--------------------+
| NULL | 0 | NULL | -0.5235987755982989 | 0.5235987755982989 |
+-----------+---------+----------+---------------------+--------------------+
1 row in set