The first person we are aware of who determined the circumference of the Earth using trigonometry and the angle of sunlight at Alexandria, Egypt, was:
A)Pytheas.
B)Eratosthenes.
C)Herodotus.
D)Seneca.
E)Ptolemy.

Question

Quizplus · Accepted Answer

The first person we are aware of who determined the circumference of the Earth using trigonometry and the angle of sunlight at Alexandria, Egypt, was Eratosthenes, who was a Greek mathematician and geographer in the third century BC.

The First Person We Are Aware of Who Determined the Circumference