00:01
So we have an airplane that's flying 100 kilometers north, here's north, and 185 kilometers west, here's west, of the airport.
00:14
So if we have 185 west and 100 north, then the distance of this airplane from the airport is the length of this diagonal.
00:34
So this is the distance from the airport and it's flying at a height of seven kilometers.
00:42
So if we want to make another triangle, here is your distance from the airport, here's the airport, here you're directly below the plane, here's your plane, and this height then is seven kilometers.
01:06
And now we want to find the angle of elevation of the airplane from the point of view of the airport, which is this angle here.
01:15
So the first thing we need to do is find the distance that the airplane is from the airport...