Fan & Medal ....

In the triangle below, you are given two measurements. What ONE other measurement would you need in order to use the Law of Cosines
http://static.k12.com/eli/bb/817/-1/0/2_36847_44974/-1/5f949d8f893fa247cefb9c3be1a4130a44ba1245/media/104cf7abdb972fe090aca7da2c63699dc9eadb11/mediaasset_651272_1.gif

Question

Fan & Medal ....

In the triangle below, you are given two measurements. What ONE other measurement would you need in order to use the Law of Cosines
http://static.k12.com/eli/bb/817/-1/0/2_36847_44974/-1/5f949d8f893fa247cefb9c3be1a4130a44ba1245/media/104cf7abdb972fe090aca7da2c63699dc9eadb11/mediaasset_651272_1.gif

anonymous · Answer

you would need the length of $a$

anonymous · Answer

if you knew $b$ you could use the law of sines

anonymous · Answer

same is true if you knew any other angle 
law of cosines when you know two sides and the included angle

anonymous · Answer

ok thanks ...... i understand....