Which mechanism allows a navigator to determine latitude with a sextant?

💡 Explanation

A sextant uses angular measurement, deriving latitude from the measured angle between the horizon and a celestial body, because it provides a stable, observable frame of reference; therefore, position can be estimated, rather than depending on speed or local landmarks.

• Which risk increases on an 18th-century wooden ship pushing too aggressively southward into the Southern Ocean's high latitudes?
• Which structural risk increases when timber pile foundations are exposed to fluctuating water levels in Venice, Italy?
• Which drawback limited the scale of interlocking bronze components in ancient Mesopotamian canal lock systems?
• Which consequence results when freeze-thaw cycles act on stone-faced Inca terrace walls?
• Which reading error arises due to parallax when observing shadow alignments through a medieval astrolabe's alidade aiming vanes?
• Which outcome commonly resulted from exceeding the critical buckling load on cast iron columns in 19th-century factories?