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I think the particular model of the calculator is irrelevant
if it has a convenient sexagesimal convertion.
The advantage of the formulas is that you do not have to
write any intermediate results.
My Casio can store only one number in the memory.
With the usual formulas, I have to write 2 intermediate
results on paper.

But if your calculator can store 3 numbers, there is no need
in the Russian formula, and you can use the usual one.
A

On Sat, 12 Feb 2005, Bill wrote:

> Alex
>
> Thank you for the formula.
>
> As to sexagesimal, is my face red.  I guess, as Readers Digest suggests, I
> have to use it in conversation 10 times to make it mine.  It proves tough to
> sneak into most conversations even once ;-)
>
> My TI-30Xa allows one to enter degrees, minutes and seconds and convert to
> decimal degrees with two keystrokes (2nd, DMS-DD).  For example 47d 16' 22"
> would be entered as 47.1622 then converted to decimal degrees for
> calculations.  It is also straight forward to convert back into sexagesimal
> with 2nd, DD-DMS and does display the degree, minute, and second symbols on
> the register.  I also like its straight forward  approach (and well marked
> keys) for converting rectangular to polar and  and vise versa for solving
> nav problems.
>
> We will have to have a calculator shootout after our sextant shootouts ;-)
>
> Bill
>
>
> >> 3.  What is a "sexagesimal".?
> >
> > It is actually YOU who taught me on this list:-)
> > (after I confused it with hexadecimal in one my message).
> > It is numeration system with base 60.
> > (degrees, minutes, seconds of angle,
> > or hours minutes seconds of time).
> > Casio is flexible and takes such input of, if you prefer,
> > degrees, minutes and tenths of minutes.
> > It also gives output in this format if you tell him to.
> >
> > It is a great thing even if you use it for conversion only.
>

   

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