The Law of Cosines

The video tutorial explains the law of cosines, comparing it to the Pythagorean theorem. It details how the law of cosines can be used to solve triangles when given two sides and the included angle (side-angle-side) or all three sides (side-side-side). The tutorial provides step-by-step examples for solving these types of triangles and highlights the differences between the law of sines and the law of cosines. The video concludes with a comprehension check to reinforce learning.

What is the law of cosines and how does it relate to the Pythagorean theorem?

Explain how the law of cosines can be used to find the length of the third side of a triangle.

In what scenarios can the law of cosines be applied compared to the law of sines?

How can the law of cosines be used to solve side-side-side triangles?

Describe the process of solving for an angle using the law of cosines.