Syntax
ASIN(X)
Purpose
You can call this function to return 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 (0.00 sec)