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Progress Test N993897..Polar Stereographic. Can't figure out a number. Please help

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  • Progress Test N993897..Polar Stereographic. Can't figure out a number. Please help

    I know there's a simple explanation, but I it's not coming to me. What am I doing wrong? I can't work out where the 94degrees figure comes from when calculating the internal angle of the tri. Nav accelerator weekend tomorrow, and I'm hoping to understand it before then as it's bugging me.
    N993897

  • #2
    If you look at the apex of the triangle A-SP-B you can see that it is made up of 56 degrees to the drawn in Grid datum of 090 and another 90 degrees to the 180 E/W plus the 4 degrees past that to 176W. The total apex angle being 56 + 94 = 150.
    Hope this helps

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