00:01
In this question, we are given the side lengths of this triangle a and b and the angle gamma, which is in between these two sides.
00:14
Opposite of gamma a and b, respectively, we have a side length c, the angle alpha, and the angle beta.
00:25
And these three we want to calculate using our knowledge of oblique triangles.
00:33
Okay.
00:33
Okay, because we have an angle in between two side lengths, or a known angle between two known side lengths, we should use the cosine law to find the side length that is opposite to that angle.
01:02
And then we substitute in our values once we have that formula down.
01:27
That c squared value that we get from calculating all this is approximately 4 .2688.
01:39
And so c is approximately 2 .066...