00:01
Okay, so let's suppose that given any triangle with capital letters, a, b, and c as angles, and lowercase letters, a b and c as side lengths, i'm given two sides and an angle between the sides, and i'm trying to find my third side.
00:14
So if i'm given side angle side in a triangle, okay, i don't, it's not a special triangle, it's just a general triangle.
00:22
So i'm going to try to use law of sides or law of cosines to solve this here.
00:26
Which one am i going to use is the question.
00:28
If i use law of signs to find another side, i need at least two angle measurements, right? because i do sign of an angle equals side of another angle.
00:37
But since i don't have that, i'm going to use law of cosides here.
00:40
So i'm going to do b squared equals one side squared plus another side squared minus two, multiply those side lanes together, times cosine of the angle across from the side, which is angle b, 84...
