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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Spherical triangle split by right triangles
From: Robert VanderPol II
Date: 2016 Jan 23, 20:21 -0800
From: Robert VanderPol II
Date: 2016 Jan 23, 20:21 -0800
Bob Goethe wrote:
No, that is the magic of spherical geometry. A line takes off from a point at a 90° angle to a meridian, and it does not remain parallel to a latitude line. (Probably, that means it was never PRECISELY parallel to a latitude line, but it appears so for short distances; this is analogous to how it is that rhumb lines are the same as great circle lines for short distances.)
Right, forgot that Latitudes are not great circles.
