Question

NEED HELP WITH A MATH QUESTION

Answer 1

`x =18.0`

Explanation:

To solve this problem use the Law of cosine.

The law of cosine says that:

`c^2 = a^2 + b^2 -2abcos(C)`

In this case we have that:

`c = x\\\\a=30\\\\b=16\\\\C=30\°`

Therefore

`x^2 = 30^2 + 16^2 -2(30)(16)cos(30\°)`

`x = √(30^2 + 16^2 -2(30)(16)cos(30\°))`

`x = √(1156 -831.38)`

`x = √(324.62)`

`x =18.0`