ASIN Function
ASIN is a trigonometric function that returns the arc sine of a number. The return value is in radians and is between PI/2 and -PI/2.
Syntax
ASIN(number)
Argument
- number
-
The input parameter is a double precision number.
Return Type
The ASIN function returns a double precision number.
Examples
The following example returns the arc sine of 1 and multiples it by 2:
select asin(1)*2 as pi; pi ------------------ 3.14159265358979 (1 row)
The following example converts the arc sine of .5 to the equivalent number of degrees:
select (asin(.5) * 180/(select pi())) as degrees; degrees --------- 30 (1 row)