Question

To find longitude, a sailor needs to know
a. the elevation of the sun above the horizon;
b. the latitude at the prime meridian;
c. local time and the time at another line of longitude;
d. the relative space;
e. none of the above.

Answer 1

To find longitude of a point, a sailor needs to know the local time and the time at another line of longitude.

Hence the answer is option c.

This number is used by various people, such as sailors, soldiers, pilots, and drivers, for two main purposes:

• To know where they are in the world, when they need to call phone in to the office.

• To know which way to steer when the office tells them where to go to.

Answer 2

Hence the answer is option C