APPROXIMATE GEODETIC DISTANCES. Objectives. After this lecture you will be able to: Calculate approximate azimuth and lengths of lines from Df and Dl . Calculate approximate Df and Dl from azimuth and lengths of lines. Lecture Outline. Introduction Approximate change in latitude
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After this lecture you will be able to:
Sphere radius = R
l= Df . R
r1Approx - Spheroid
s= Df . rm
You can now: