00:01
A book starts at point a, and it goes 8 centimeters east, and then turns, it goes 5 centimeters south, 3 centimeters west.
00:16
Let's make that 3 over a little bit.
00:18
I'll put the bottom 3 centimeters west, and then 4 meters, centimeters north to point b.
00:28
So here's point b.
00:29
And so we want to know what or how much east and north, is point b to point a.
00:40
So to get from a and b, you must go over.
00:43
So let's figure out our horizontal directions.
00:48
So we have 8, which is positive, minus 3, which is negative because of west, and we get 5 meters east.
00:58
So it is over 5 meters east.
01:02
And then for our vertical, we have negative 5, because south is negative, plus four...