Navigation problem

[Bob F.[_2_]]

Here's a cute trivial problem I usually use to kill time with curious students.
There are places on the Earth where you can fly; 1 mile south, then 1 mile east (or west), and then 1 mile north, and end up in the same place. One of these places is the north pole. Where are the others?

--
Regards, BobF.

[Mike[_22_]]

Anthony's computer chair.
"Bob F." > wrote in message . ..
Here's a cute trivial problem I usually use to kill time with curious students.
There are places on the Earth where you can fly; 1 mile south, then 1 mile east (or west), and then 1 mile north, and end up in the same place. One of these places is the north pole. Where are the others?

--
Regards, BobF.

[a[_3_]]

On Aug 27, 7:18*pm, "Bob F." > wrote:
> Here's a cute trivial problem I usually use to kill time with curious students.
> There are places on the Earth where you can fly; 1 mile south, then 1 mile east (or west), and then 1 mile north, and end up in the same place. *One of these places is the north pole. *Where are the others?
>
> -
> Regards, *BobF.

the correct distance from the south pole that is one mile north of the
place where 1 mile is one, two, three, or more circles of the pole, of
course. There are an infinity of them, but I think the most distant
one from the pole is the order of 1 plus1/6.28 miles from the south
pole.

[Bob F.[_2_]]

"a" > wrote in message
...
On Aug 27, 7:18 pm, "Bob F." > wrote:
> Here's a cute trivial problem I usually use to kill time with curious
> students.
> There are places on the Earth where you can fly; 1 mile south, then 1 mile
> east (or west), and then 1 mile north, and end up in the same place. One
> of these places is the north pole. Where are the others?
>
> -
> Regards, BobF.

the correct distance from the south pole that is one mile north of the
place where 1 mile is one, two, three, or more circles of the pole, of
course. There are an infinity of them, but I think the most distant
one from the pole is the order of 1 plus1/6.28 miles from the south
pole.


Right on...you guys are too good!

--
Regards, BobF.