Question

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

Answer 1

Answer:

7.81

Step-by-step explanation:

Pythagorean theorem

$\sqrt{6^{2} +5^{2} }$

$\sqrt{61}$= 7.81

c = 7.81

Law of Cosines

$c=\sqrt{b^{2} +a^{2}-2ba*cos(C) }$

$c=\sqrt{6^{2}+5^{2}-((2*6*5)*cos(90)) }$

c = 7.81