Find the Smaller Longitude Separation - Practice 1

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Use east longitudes as positive and west as negative. Take their absolute difference; if it exceeds 180 degrees, subtract it from 360. This is an angular longitude separation, not a ground distance or general great-circle distance.

Worked example

170 E and 170 W differ by 340 numerically, but their smaller longitude separation is 360 - 340 = 20 degrees.

A schematic longitude circle places 170 E and 170 W near the 180-degree wrap. The smaller longitude separation is 20 degrees even though signed values differ by 340. This is an angle, not ground distance.

Question 1 Locations Alder are at 120 E and 110 W. What is their smaller angular longitude separation in degrees? Answer

Question 2 Locations Birch are at 125 E and 115 W. What is their smaller angular longitude separation in degrees? Answer

Question 3 Locations Cedar are at 130 E and 120 W. What is their smaller angular longitude separation in degrees? Answer

Question 4 Locations Dune are at 135 E and 125 W. What is their smaller angular longitude separation in degrees? Answer

Question 5 Locations Elm are at 140 E and 130 W. What is their smaller angular longitude separation in degrees? Answer