JAMB - Mathematics (1987 - No. 33)

What is the circumference of latitude 0°S if R is the radius of the earth?

R cos\(\theta\)

2\(\pi\) R cos \(\theta\)

R sin \(\theta\)

2\(\pi\) R sin \(\theta\)

Circumference of Latitude 0oS where R is the radius of the earth is = 2\(\pi\) R cos \(\theta\)