MySQL ASIN() Function

Return the arc sine of a number:

SELECT ASIN(0.25);

Definition and Usage

The ASIN() function returns the arc sine of a number.

The specified number must be between -1 to 1, otherwise this function returns NULL.

ASIN(number)

Parameter	Description
number	Required. A numeric value

Works in:	From MySQL 4.0

Return the arc sine of a number:

SELECT ASIN(-0.8);