- Solving for a side of the triangle with the law of cosines. (4:38)
Side of a triangle is 12 and side of a triangle is 9, and the angle contained between them is 87 degrees. What is the length of the other side of the triangle? Solution:
- Solving for an angle with the law of cosines. (6:41)
Given a triangle with base 60 and other sides 50 and 20 , find the angle between the base and the longer side of the triangle. Solution: degrees.
- Solve a triangle using the law of cosine
- Proof of the law of cosines (9:26)