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# ASIN

SQL Server 2000

Returns the angle, in radians, whose sine is the given float expression (also called arcsine).

##### Syntax

ASIN ( float_expression )

##### Arguments

float_expression

Is an expression of the type float, with a value from -1 through 1. Values outside this range return NULL and report a domain error.

float

##### Examples

This example takes a float expression and returns the ASIN of the given angle.

``````-- First value will be -1.01, which fails.
DECLARE @angle float
SET @angle = -1.01
SELECT 'The ASIN of the angle is: ' + CONVERT(varchar, ASIN(@angle))
GO

-- Next value is -1.00.
DECLARE @angle float
SET @angle = -1.00
SELECT 'The ASIN of the angle is: ' + CONVERT(varchar, ASIN(@angle))
GO

-- Next value is 0.1472738.
DECLARE @angle float
SET @angle = 0.1472738
SELECT 'The ASIN of the angle is: ' + CONVERT(varchar, ASIN(@angle))
GO
``````

Here is the result set:

``````-------------------------
The ASIN of the angle is:

(1 row(s) affected)

Domain error occurred.

---------------------------------
The ASIN of the angle is: -1.5708

(1 row(s) affected)

----------------------------------
The ASIN of the angle is: 0.147811

(1 row(s) affected)
``````