Question Polar stereographic chart
Can anybody show me how to calculate the answer of this question? Thanks a lot.
On a polar stereographic chart where the earth convergence between 2 points located on the parallel 60°N is 20°, the great circle maximum cross-track difference with the straight line joining the 2 points is :
9.2 NM.
4.0 NM.
30 NM.
4.0 NM.