Determine the great circle initial course...

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Question 1 of 2066636eea28f7522a1c51b0d4

Determine the great circle initial course from LAT 07° 05.0' N, LONG 81° 45.0' W to LAT 21° 15.0' N, LONG 157° 40.0' W.

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Question 1 of 20

66636eea28f7522a1c51b0d4

Determine the great circle initial course from LAT 07° 05.0' N, LONG 81° 45.0' W to LAT 21° 15.0' N, LONG 157° 40.0' W.

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🔍 Key Concepts

• Great-circle initial course vs. rhumb line (loxodrome) • Use of meridional parts / mid-latitude to judge general direction on the globe • Relative positions of 07°N 081°W and 21°N 157°W on a world map (Caribbean vs. Central Pacific)

💭 Think About

• First, picture both positions on a world map: in which ocean is each point, and which way (NE, NW, SE, SW) is the destination from the departure? • Consider how longitudes work across the Western Hemisphere toward the Pacific—does going from 81°W to 157°W make your course generally eastward or westward? • For a great-circle track in this latitude band, will the initial course be closer to north, south, east, or west? Then refine to which quadrant (e.g., NW vs. SW).

✅ Before You Answer

• Be sure you are thinking on a global scale, not just a local chart—mentally unwrap the world map. • Confirm which hemisphere (N/S and E/W) each point lies in and how the longitude change (from 81°W to 157°W) affects the general direction of travel. • Eliminate any answers that clearly send you in the wrong quadrant (e.g., an easterly course when you clearly need to head generally westward).

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Question 1 of 2066636eea28f7522a1c51b0d4

Determine the great circle initial course from LAT 07° 05.0' N, LONG 81° 45.0' W to LAT 21° 15.0' N, LONG 157° 40.0' W.

Back

Question 1 of 20

66636eea28f7522a1c51b0d4

Determine the great circle initial course from LAT 07° 05.0' N, LONG 81° 45.0' W to LAT 21° 15.0' N, LONG 157° 40.0' W.

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

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