(trick) working with hours, minutes, seconds

[Joe Horn]

(02-24-2014 04:20 PM)Helge Gabert Wrote:  What was the symbolic result you got? I get 3*pi-9, which is correct. And no problem with converting that with the a/b/c key. I have the CAS flag "exact" on as well. Maybe I'm missing something.

You're in radian mode. The original problem assumes degree mode (an input of 9 degrees, not 9 radians).