Question

Find the missing side length. Round your answer to the nearest tenth.

A) 4.7


B) 5.5


C) 30.8


D) 43.2

Answer 1

Answer:

Option B. $5.5$

Step-by-step explanation:

we know that

Applying the law of cosines

Let

c------> the missing side length

$c^{2}=9^{2}+6^{2} -2(9)(6)cos(37)$

$c^{2}=30.747$

$c=5.5$