ASIN
Returns the arc sine of x in radians, or NULL if x is not in the range [-1, 1].
Syntax
ASIN (x)
Arguments
x: the argument
Return Type
Float or double. NULL if x is NULL or invalid.
Examples
SELECT ASIN(1); **** +--------------------+ | ASIN(1) | +--------------------+ | 1.5707963267948966 | +--------------------+