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MySQL:
ASIN
Syntax:
ASIN(X)
Returns the arc sine of X, that is, the value whose sine is X. Returns
NULL if X is not in the range -1 to 1.
Example
mysql> SELECT ASIN(0.2);
-> 0.20135792079033
mysql> SELECT ASIN('foo');
+-------------+
| ASIN('foo') |
+-------------+
| 0 |
+-------------+
1 row in set, 1 warning (0.00 sec)
mysql> SHOW WARNINGS;
+---------+------+-----------------------------------------+
| Level | Code | Message |
+---------+------+-----------------------------------------+
| Warning | 1292 | Truncated incorrect DOUBLE value: 'foo' |
+---------+------+-----------------------------------------+
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