Find angle C.
Just plug into the Law of Cosines clue and solve for angle C
82 +172 -2(8)(17) cos c = 162 Solve for angle C (using arc cos)
a=17ft
b=8ft
c=16ft
\(\gamma=[?]^0\)
Hello Guest!
\(\color{blue}c^2=a^2+b^2-2ac\ cos\gamma\\ cos\ \gamma=\frac{a^2+b^2-c^2}{2ac}\\ coc\ \gamma=\frac{17^2+8^2-16^2}{2\cdot 17\cdot 16}\)
\(cos\ \gamma=0.1783\\ \gamma=arccos\ 0.1783\)
\(\gamma=79.7^0\)
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+36916 
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