Question 1905Navigation General70% to pass
The initial great circle course angle between LAT 23°00'S, LONG 42°00'W and LAT 34°00'S, LONG 18°00'E is 063.8°. What is the true course?
AI Explanation
The correct answer is D) 116.2°T.
The initial great circle course angle between the two given positions is 063.8°. To find the true course, we need to add 180° to this angle, which gives us 243.8°. However, since the course is going from the Southern Hemisphere to the Eastern Hemisphere, we need to subtract 360° from 243.8°, which results in the true course of 116.2°T.
The other options are incorrect because:
A) 243.8°T is the initial great circle course angle, not the true course.
B) 063.8°T is the initial great circle course angle, not the true course.
C) 296.2°T is the incorrect calculation, as it does not account for the change in hemispheres.
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