Question

On which triangle can the law of cosines be used to find the length of an unknown side? Law of cosines: a2 = b2 + c2 – 2bccos(A)

Answer 1

Step-by-step explanation:

You would use this law under two conditions:

• One angle and two edges defined, while trying to solve for the third edge
• ALL three edges defined

Hence, you have your answer.

* Just make sure to use the inverse function towards the end, or elce you will throw your answer off!

_______________________________________________

Now, you would use the Law of Sines under three conditions:

• Two angles and one edge defined, while trying to solve for the second edge
• One angle and two edges defined, while trying to solve for the second angle
• ALL three angles defined [of which does not occur very often, but it all refers back to the first bullet]

* I HIGHLY suggest you keep note of all of this significant information. You will need it going into the future.

I am delighted to assist you at any time.