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← HistoryWhich navigation risk increased despite 1700s sextant improvements?
A)Celestial visibility obstruction increases
B)Chronometer accuracy dependent sextant use
C)Calculation error exceeds instrument error✓
D)Motion induced index error increases
💡 Explanation
Sextant accuracy improved observation, but mathematical manual calculations introduced position errors; because spherical trigonometry was still required, calculation skills became limiting, therefore calculation error increased, rather than sextant error becoming insignificant.
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