Question 1022513
Using the law of cosines, we have
{{{c^2 = a^2 + b^2 - 2ab*cos C}}}
{{{c^2 = 3^2 + .6^2 - 2(3)(.6)cos(120-28)}}}
{{{c^2 = 9.36 - 3.6*cos(92)}}}
{{{c^2 = 9.4856}}}
and
c = 3.08