Question

Given any triangle ABC with corresponding side lengths A, B, and C, the law of cosine states:

Answer 1

Step-by-step explanation:

The Law of Cosines is used to find the remaining parts of an oblique triangle when either the lengths of two sides and the measure of the included angle are known or the lengths of the three sides are known.

Consider the following oblique triangle:

Applying this oblique triangle, we can state the law of cosines to find side b:

`b^2=a^2+c^2\text{ - 2ac }\cos(B)`

We can conclude that the correct answer is:

Answer:
`b^2=a^2+c^2\text{ - 2ac }\cos(B)`