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

Option B.
`5.5`

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`