You are on a great circle track departing...

Question 1 / 2066636eea28f7522a1c51b2f4

Question 1 of 2066636eea28f7522a1c51b2f4

You are on a great circle track departing from position LAT 25°50'N, LONG 77°00'W. The position of the vertex is LAT 37°35.6'N, LONG 25°57.8'W. The distance along the great circle track from the vertex to a point (X) is 600 miles westward. Determine the position of point (X) on the great circle track.

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Question 1 of 20

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🔍 Key Concepts

• Great circle sailing and how distance from the vertex relates to changes in latitude and longitude • Relationship between difference of longitude (DLo) and middle latitude on a great circle segment near the vertex • How latitude changes symmetrically on either side of the vertex latitude

💭 Think About

• From the vertex, if you move 600 miles along the great circle, will your latitude be higher, lower, or the same as the vertex latitude? Think about the shape of a great circle on a Mercator chart. • Which direction (east or west) are you moving from the vertex, and how should that affect the sign of the longitude change? • Among the choices, which latitude is most consistent with being 600 miles away from the vertex on the descending side of a North Atlantic great circle route?

✅ Before You Answer

• Compare each choice’s latitude with the vertex latitude 37°35.6'N and decide if it makes sense for a point 600 miles away along the descending side of the great circle. • Estimate roughly how many degrees of latitude correspond to 600 NM (using 60 NM ≈ 1° of latitude) and see which answers have a realistic latitude change. • Check the longitude direction: from 25°57.8'W, after going 600 miles westward along the great circle, should the longitude number be larger or smaller? Eliminate options that don’t match this trend.

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Question 1 of 20

LAT 36°47.5'N, LONG 38°21.8'W

LAT 36°50.4'N, LONG 38°25.6'W

LAT 36°55.6'N, LONG 38°30.0'W

LAT 37°02.3'N, LONG 38°34.4'W

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Question 1 / 2066636eea28f7522a1c51b2f4

Question 1 of 2066636eea28f7522a1c51b2f4

Back

Question 1 of 20

66636eea28f7522a1c51b2f4

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed