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Courtney, wrote:
>> "I'm interested in possibly programming a calculator to handle
>> some
>> navigation calculations to avoid carrying cumbersome tomes

Alex responded:

> I can post his formula if anyone is interested. It requires 68
> key pressings, including the sexagesimal data input,
> for solving one nav triangle.

I, for one, would be very interested in seeing the formula/keypad sequence.

> I use Casio fx-250D which has a great advantage
> that you can input sexagesimals (degrees, minutes) with a special
> key. Reducing one sight (one position line from an altitude)
> takes about
> 5-6 minutes
> after some practice.

I prefer the TI-30Xa as it has three memories and seems to suit my style of
working.  But that is subjective.

Three questions:

1.  I only see Casio 260'a at Wal-Mart etc.  Is the 250 still available?

2.  Differences between the 250 and 260?

3.  What is a "sexagesimal".?

Bill

   

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