Question

Does the law of cosines work for any triangle?

Answer 1

Answer:  It works on any triangle, not just right triangles. where a and b are the two given sides, C is their included angle, and c is the unknown third side. .

Answer 2

From that, you can use the Law of Cosines to find the third side. It works on any triangle, not just right triangles. where a and b are the two given sides, C is their included angle, and c is the unknown third side. ... By plugging these into the Law of Cosines we get a length of 25.6 for the the third side c.