ok, I got 41.
Your calc might be a bit different from mine. I am using an older CASIO.
I just enter 'shift' then 'sin' to get sine-1 and then I just entered the rest as shown.
Make double sure that your calculator is in degrees mode - it might be set to radians.
If it still won't work tell me what kind of calc you are using and I may be able to help more.
+118677 
