Khan Academy
Khan Academy: Proof of the Law of Cosines
Sal gives a simple proof of the Law of cosines.
Sophia Learning
Sophia: Solving an Sas Triangle With the Law of Cosines
Solving an SAS by using the Law of Cosines is demonstrated here.
Sophia Learning
Sophia: Solving an Sas Triangle With the Law of Cosines #6
Solving an SAS by using the Law of Cosines is demonstrated here.
Sophia Learning
Sophia: Solving an Sas Triangle With the Law of Cosines: Lesson 3
Solving an SAS by using the Law of Cosines is demonstrated here. This lesson is 3 of 6 in the series titled "Solving an SAS Triangle with the Law of Cosines."
Sophia Learning
Sophia: Solving an Sas Triangle With the Law of Cosines #3
Solving an SAS by using the Law of Cosines is demonstrated here.
Sophia Learning
Sophia: Solving an Sas Triangle With the Law of Cosines: Lesson 1
Solving an SAS by using the Law of Cosines is demonstrated here. This lesson is 1 of 6 in the series titled "Solving an SAS Triangle with the Law of Cosines." [3:22]