This position would be the South Pole. Amundsen-Scott South Pole Station is located at the South Pole, but isn't really a city.
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c=90 degrees s=180 degrees
it s a angle that is less than 90 degrees.
It is a triangle in which one of the angles has a measure in the range (90, 180) degrees.
Meridians and circles of latitude (parallels) will meet at an angle of 90 degrees at the equator only. All other crossings will not be 90 degrees as they converge to the two poles. To correct the previous answer: All meridians crossing parallels are not at 90 degrees due to the curvature of the spherical triangle's three sides. However, they will all cross at 90 degrees as viewed each from a specific point in space which would be perpendicular to the earth's N-S axis and directly over (in line) with the meridian.
technology in the 90's