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ASIN

Calculate arc cosine. This function returns the angle in radians whose cosine is the given number.

Syntax

ASIN(X)

Description

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.

Examples

_{This page is licensed: GPLv2, originally from}

SELECT ASIN(0.2);
+--------------------+
| ASIN(0.2)          |
+--------------------+
| 0.2013579207903308 |
+--------------------+

SELECT ASIN('foo');
+-------------+
| ASIN('foo') |
+-------------+
|           0 |
+-------------+

SHOW WARNINGS;
+---------+------+-----------------------------------------+
| Level   | Code | Message                                 |
+---------+------+-----------------------------------------+
| Warning | 1292 | Truncated incorrect DOUBLE value: 'foo' |
+---------+------+-----------------------------------------+