Show that the points (20°N,20°E) and (60°N,160°W) lie on the same great circle.Find their great circle distance apart.

Answer 1

since their longitude differs by 180°, the lie on the same great circle, which passes through both poles.

It would have been more challenging to prove that they lie on a slanted great circle.

Answer 2

I need the answer with workings

Answer 3

I need the answers with workings

Answer 4

Yes I need the answer with workings

Answer 5

11,100km