Find the length of the third side. If necessary, round to the nearest tenth. 6 5

Answer:
7.81
Step-by-step explanation:
Pythagorean theorem
[tex]\sqrt{6^{2} +5^{2} }[/tex]
[tex]\sqrt{61}[/tex]= 7.81
c = 7.81
Law of Cosines
[tex]c=\sqrt{b^{2} +a^{2}-2ba*cos(C) }[/tex]
[tex]c=\sqrt{6^{2}+5^{2}-((2*6*5)*cos(90)) }[/tex]
c = 7.81