(trick) working with hours, minutes, seconds

[Helge Gabert]

(02-23-2014 05:36 PM)rprosperi Wrote:  

(02-23-2014 01:43 PM)Joe Horn Wrote:  In CAS only, [a b/c] performs either approx(Ans) or exact(Ans) depending on what's on the history stack.

How does one convert a CAS symbolic result to numeric (sorta like RPL's ->NUM)?

Example: (CAS Exact setting ON) I was following another thread comparing machine accuracy, and in CAS mode did asin(acos(atan(tan(cos(sin(9)))))which gives a symbolic result (not worth typing here, presumably correct), so I then pressed [a b/c] hoping to see the numeric value but instead get an error, repeating the symbolic result and "Error: Bad Argument Value". No help from eval() either. Shift-Enter produces the same error as well.

I get that I can change the CAS Exact setting and re-enter the equation, but there must be some (obvious?) way to do this, no?

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.