asin

Description

Computes the arc sine of the argument.

Syntax

DOUBLE asin(DOUBLE arg)

Parameters

arg: You can specify only a numeric value. This function converts the numeric value into a DOUBLE value before it computes the arc sine of the value.

Return value

Returns a value of the DOUBLE data type.

Usage notes

If you specify a non-numeric value, this function returns NULL.

Examples

mysql> select asin(1);
+--------------------+
| asin(1)            |
+--------------------+
| 1.5707963267948966 |
+--------------------+

mysql> select asin(-0.5);
+---------------------+
| asin(-0.5)          |
+---------------------+
| -0.5235987755982989 |
+---------------------+

mysql> select asin(0);
+---------+
| asin(0) |
+---------+
|       0 |
+---------+

mysql> select asin("");
+----------+
| asin('') |
+----------+
|     NULL |
+----------+

keyword

ASIN

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