T-SQL - ASIN() Function

The T-SQL (Transact-SQL) ASIN() function returns arc sine of a value. The returned value will be in the range -𝜋/2 through 𝜋/2. In special cases it returns the following:

If the number is not within the range of -1 to 1, then an error is returned.

Note: ASIN() is the inverse of SIN().

Syntax

ASIN(x)

Parameters

`x`	`Required.` Specify the value.

Return Value

Returns the arc sine of the value.

Example 1:

The example below shows the usage of ASIN() function.

SELECT ASIN(0.2);
Result: 0.2013579207903308

SELECT ASIN(0.8);
Result: 0.9272952180016123

SELECT ASIN(1);
Result: 1.5707963267948966

SELECT ASIN(-1);
Result: -1.5707963267948966

SELECT ASIN(0);
Result: 0

SELECT ASIN(-0.2);
Result: -0.2013579207903308

Example 2:

Consider a database table called Sample with the following records:

Data	x
Data 1	-1
Data 2	-0.5
Data 3	0
Data 4	0.5
Data 5	1

The statement given below can be used to calculate the arc sine of records of column x.

SELECT *, ASIN(x) AS ASIN_Value FROM Sample;

This will produce the result as shown below:

Data	x	ASIN_Value
Data 1	-1	-1.5707963267948966
Data 2	-0.5	-0.5235987755982989
Data 3	0	0
Data 4	0.5	0.5235987755982989
Data 5	1	1.5707963267948966

❮ T-SQL Functions