ASIN
Returns the arc sine of x, that is, the value whose sine is x. Returns NULL if x is not in the range -1 to 1.
Syntax
ASIN( <x> )
Examples
SELECT ASIN(0.2);
┌────────────────────┐
│ asin(0.2) │
├────────────────────┤
│ 0.2013579207903308 │
└────────────────────┘