(alerts)
Finding 6·arcSin(Sin(π/6)) : To proceed → Click! ← this text --or-- Press [Enter] ...
Finding 4·arcSin(Sin(π/4)) : To proceed → Click! ← this text --or-- Press [Enter] ...
Finding 5·arcSin(Sin(π/5)) : To proceed → Click! ← this text --or-- Press [Enter] ...
Windows , calc.exe : 3.1415926535897932384626433832795
javascript source as is ::
[Eop]