|1.||Place aircraft at NWWW airport.|
|2.||Open sextant gauge, and enter -20 -41, 166 51 as the "Assumed Position".|
(Or the nearest possible value, with the standard sextant gauge.)
|3.||Take a reading at 180º (should return 80nm)|
(The elevation on the form is not interpreted by the sextant, and can stay at 0.)
|4.||Take another reading at 270º (should return 35nm)|
Method using Google Earth
Open Google Earth, and put a placemark at the assumed position.
Activate rulers (Tools | Ruler), select the Line tab,
and set units to nautical miles.
Make sure that that north is straight up (press "G" to align, if it isn't.).
Click on the assumed position, and drag a vertical line down,
at the length of the 180º distance (if negative, draw the line up).
Select the handle at start of the line (at the assumed position),
and drag it to left of the end marker (to indicate the 270º distance).
(The Ruler window will show the heading as 90º, but that's ok,
as it's considering the moved point to be the origin.)
If the distance was negative, drag it to the right instead.
The final point is your actual position.
You could now drag the intermediate point (on the right) back
onto the assumed position, and the ruler window will give the
distance and (true) heading between these two.