A triangle has sides A, B, and C. Sides A and B are of lengths 9 and 7, respectively, and the angle between A and B is (7pi)/8 . What is the length of side C?
2 Answers
Nov 6, 2016
Explanation:
To answer this question, we have to use the law of cosines.
Nov 6, 2016
2.0359.....
Explanation:
Cosine rule (rearranged for c) =
=2.035924013