What did a jacob's staff do for a 16th century navigator? a. it him determine his ship's latitude. b. it allowed him to read the position of the stars. c. it him measure the distance between neighboring ships. d. it allowed him to determine if a patch of water was navigable.

A. It helped him determine his ship's latitude.

Explanation:

A jacob staff, is a crossbow shaped instrument that hels measure the distance from the horizon to a certain celestial body, like the stars, the sun, or the moon, by knowing this angle a navigator could then figure out his latitude and direction. It gets his name from the bible, where Jacob crosses the Jordan river using a staff.

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