00:01
So for this problem, we have this triangle here, and we're asked to find the value of x.
00:07
And i'm going to try to present two ways to solve the problem.
00:12
One way is, in my opinion, the way you should solve this problem.
00:16
And the other way is, if you realize a special thing about this triangle, then you can get the answer immediately.
00:21
The problem with that second way is that it doesn't work all the time.
00:26
So let's look at what i think is the better way to solve it.
00:30
The problem.
00:32
So we have a right angle here and we have two unknown sign lanes.
00:36
They both happen to be x.
00:38
So we solve for one sine length and we have the other.
00:42
So since we're a bright triangle, we can use the pythagorean theorem, the pythagorean theorem, to solve for x.
00:53
So that would be a squared plus b squared is equal to c squared.
00:58
And c is the length of hypotenuse.
00:59
That's the opposite to that of the right angle.
01:02
So c equals 3 root 2...