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What role does the magnetic variation play in navigation

Sure! Here are three different responses:

. "Magnetic variation, or declination, is super important for navigation because it tells you the difference between true north and magnetic north. When you're using a compass, you need to account for this variation to make sure you're heading in the right direction. If you don’t, you could end up way off course!"

. "So, magnetic variation is basically the angle between where your compass points and where the actual north is. It changes depending on where you are on the planet. If you're sailing or hiking, knowing this helps you adjust your course correctly, so you don’t get lost!"