A \straight line" between two points on a sphere is dened to be an arc of the great
circle passing through these points. Given two points on the equator on the Earth
(considered as a perfect sphere), one at longitude 0 degree and the other at longitude
180 degrees, the number of \straight lines" passing through these two points is
(A) 1. (B) 2. (C) 4. (D) innite.




This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
If the two points are at the ends of a diameter of Earth ie., at the opposite ends of a  diameter, then  there are infinite number of straight lines.

If the two points are some other two points, then there are  2  lines.

1 5 1