Question

What is the length of AB¯¯¯¯¯, to the nearest tenth of a meter?

4.4

6.5

8.6

8.9

Answer 1

8.6 is the answer to this question

Answer 2

To find the length of AB, we have to se law of cosine, which is

`AB^2 = AC^2 + BC^2 -2(AC)(BC) cos C`

Substituting the given values of AC, BC and angle C

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Taking square root on both sides

`AB = 8.6`

Therefore the correct option is the third option .