math arccosh for math> math arccosh {flags} 
| input | output | 
|---|---|
| list<number> | list<number> | 
| number | number | 
Get the arccosh of 1
>1|math arccosh
0
Tips: Command math arccosh was not included in the official binaries by default, you have to build it with --features=extra flag
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    https://www.nushell.sh/commands/docs/math_arccosh.html