Oracle PL/SQL ASIN function example

The ASIN() function returns arc sine of input n, the input n must be in the range of -1 to 1. The function will return a value in the range of -pi/2 to pi/2, expressed in radians.

ASIN function examples

SELECT ASIN(.25) FROM DUAL; 
-- output 
0.25268025514207865348565743699370756609
SELECT ASIN(-.5) FROM DUAL; 
-- output
-0.52359877559829887307710723054658381405
SELECT ASIN(-1) FROM DUAL; 
--output
-1.5707963267948966192313216916397514421
SELECT ASIN(1) FROM DUAL;   
--output
1.5707963267948966192313216916397514421

Now in below example, we tried to pass value -2.5 which is not in range -1 to 1, and notice the error.

SELECT ASIN(-2.5) FROM DUAL;
-- output
ORA-01428: argument '-2.5' is out of range
01428. 00000 -  "argument '%s' is out of range"

References

1. ASIN Function :- Oracle official docs