The Law of Cosines...A few points to remember

The above link will take you to a site for practice with the law of cosines. I suggest trying it out with a few questions from your assignment first as a check to see how you're making out with your calculator. This formula can be difficult to work with at first. Then make up a few triangles of your own that require the use of the law of cosines and use the applet to find your answers. This particular topic can require a fair bit of practice, so make up some questions of your own to try.



This link will take you to a page that covers the two Trig laws we've covered so far and explains them in quite a bit of detail. The explanations are followed by some problems that you could try. I suggest drawing the triangles described (an important skill to learn), then try answering them. There are answers at the bottom of the page so that you can check your work.



Happy solving!