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← HistoryWhich outcome occurs when a sextant's mirrors misaligned?
A)Bearing errors increase gradually
B)Altitude errors remain constant
C)Horizon-dip estimates become precise
D)Celestial fix repeatability diminishes✓
💡 Explanation
Celestial fix becomes less repeatable because sextant mirror error introduces systematic angular measuring error through parallax, and this accumulated uncertainty degrades fix quality; therefore, successive measurements scatter widely rather than aligning within tolerances.
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