On a Polar Stereographic chart, point A at 80°N, 000° and point B at 70°N, 102°W are joined by a straight line, with the highest latitude reached at 035°W.
What is the true track from A to B at point B?
Refer to figure
We would suggest drawing a sketch like the one attached for a Polar chart.
At the highest latitude (35ºW) – the straight line intersecting the meridian 35ºW is perpendicular to the said meridian => we then get a right-angle triangle.
Next step is to calculate the angles of the triangle.
102º - 35º = 67º
90º - 67 º = 23º
- The latter will be the direction of the line from B – A. Direction upon arrival at B (from A) will be the reciprocal: 023º + 180º = 203ª
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