Find an unknown angle of a side side side triangle using the Law of Cosines
This lesson covers using the Law of Cosines to find an angle in a triangle.
Determination of Unknown Angles Using Law of Cosines Interactive
Gives an example of using the Law of Cosines to find the measure of the largest angle of a triangle, given the lengths of all three sides.
Practice Determination of Unknown Angles Using Law of Cosines questions
To activate prior knowledge, to generate questions about a given topic, and to organize knowledge using a KWL Chart.