00:01
Okay, so i'm going to just draw a triangle, not to scale, just a place to kind of put my information.
00:09
I'm going to label it abc.
00:13
Now, angle b measures 137 .3 degrees.
00:20
Side c is 7 .476, and side b is 15 .426.
00:28
And i'm going to proceed using law of signs to see what situation i have because i have side -side angle.
00:37
That's that ambiguous case and we don't know until we get started whether we have one, two, or no triangle.
00:47
So 137 .3 degrees over its corresponding side equals sign of c over 7 .476.
00:58
We're going to cross multiply and then divide both sides by 15 .426.
01:15
Okay, so let's do that.
01:17
Grab a calculator, make sure you're in degree mode, 137 .3 times 7 .476, divide that by 15 .426.
01:28
You're going to get sign of c equals 0 .3287.
01:39
So c is the inverse sign.
01:42
So let's find the inverse sign of 0 .3287.
01:49
And that's going to give us 19 .2 degrees.
01:54
Or remember, the ambiguous case, you always have to consider the supplement to that or 160 .8.
02:02
Okay, but we already have 137 in our triangle...