Suppose you're standing at a place on earth such that when you walk 1 Mile South, 1 Mile West and then 1 Mile North, you end up at the same position. Where could you possibly be? -Riddles
We will be at the same position where we started. That is because the Earth is not flat and is approximately shaped like a Potatoe. Sol ⟹ When we start at any of the 2 poles and move 1 Mile South, 1 Mile West and 1 Mile North we end up at the same position we started for obvious reasons which are mentioned above. But the same is not possible in or around the Equator. Therefore instead of poles we have only one Practical example for solving this solution. We have to cancel the net effect of the West direction. This can be achived by considering a circular path of Circumference 1 mile in the north direction of the south pole. Now when we first travel 1 mile westwards, we reach at the same point from where we started, with this we have Nullified the net effect of the Westward Movement. Now the starting position is to be marked as "a". From point a we will travel 1 mile south to reach the point from where we are cancelling the Net Westward Motion. This point is to be marked as "b". From point b when we travel in a circular where the circumference = 1 mile we end up at the point b as we know. Now when we travel 1 mile north we reach point a, that is the Point from which we started. The mathematical equation for this problem ⟹ C = 1/S = 1/1 = 0. (S = Distance covered in Southward direction) Therefore, we get the answer as 0 which means we have reached our starting position. For more reference you can watch the video through the link provided below; https://www.youtube.com/watch?v=JQf4p4aGf9o HOPE IT HELPS! :)