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

A.
R cos(theta) 
B.
2(pi) R cos (theta) 
C.
R sin (theta) 
D.
2(pi) R sin (theta)
Correct Answer: Option B
Explanation
Circumference of Latitude 0oS where R is the radius of the earth is = 2(pi) R cos (theta)