the answer in the attached figure
<u><em>10 2/7 ÷ 3/14</em></u> First Write The Equation
<u><em>72/7 ÷ 3/14</em></u> Use KCF which is Keep, Change, and Flip
<u><em>1008/21</em></u> Use Division Of Equality
<u><em>Answer: 48</em></u>
Answer:

Step-by-step explanation:
we know that
The formula of law of cosines is equal to

where
a, b and c are sides. C is the angle opposite side c
In this problem we have

substitute the given values





