Being able to identify which formula to use, sine or cosine, and when, is necessary to answer questions on this topic successfully. Check you are confident in how to use the sine and cosine rules.

Learn how to solve for the lengths of the sides and the measures of the angles of a triangle using the law of cosines. The law of cosines is used in determining the lengths of the sides or the ...

Here is the new description with all the links and additional text removed: Learn how to solve equations using the angles sum and difference identities. Using the angles sum and difference identities, ...