00:01
Here we have a 30 feet ladder and it is leaning against a building.
00:12
So it says that the foot of the ladder is about, so if we have this ladder, it's going to be about 10 feet away.
00:24
Okay, so we have to figure out how far up the building does the ladder reach.
00:29
So we're trying to figure how tall it is.
00:31
So what we're going to be using is pythagorean theorem.
00:35
So that's going to be a squared plus b squared is equal to c squared.
00:38
C is the hypotenuse.
00:40
Your building is going to be 90 degrees to the floor.
00:46
So anything across the 90 degrees is going to be your hypotenuse or c.
00:50
So a squared plus b squared is equal to c squared.
00:57
So we're trying to find a squared.
00:59
B, i'm going to say it's 10.
01:03
It does not matter if you flip a and b.
01:06
You're going to be quote unquote adding them at the end.
01:08
As long as c is 30, you are good to go...