Formula

[SMcNeill]

I# = _R2D(ASIN(F# * SIN(H#)))
Gives error. From what version of QB64 _R2D is valid.

If only there was some source of reference information which one might could use to look up information like that...  Perhaps, something... like a wiki??



https://qb64phoenix.com/qb64wiki/index.php/R2D

Availability

• QB64 v1.0 and up
  
• QB64-PE all versions
  

I'd say the issue is the lack of underline with the _ASIN command.  

Honestly, I do recommend the wiki for looking up syntax and examples for stuff like this.   There's a reason why we go through so much effort to document these things for the user base, you know.