Use the law of cosines to find the value of cos theta. round your answer to two decimal places

The correct answer option is B. 0.21.

Step-by-step explanation:

We are to find the value of using the law of cosines.

We know that the formula of the cosine rule is given by:

So substituting the given values in the above formula:

cos C = 0.21

$4034.40

the perimeter of the field is the sum of the lengths of the four sides:

47 yd + 158 yd + 47 yd + 158 yd = 410 yd

the cost of 3 ft (1 yd) of fence is 3×$3.28 = $9.84.

so the cost of jake's wood perimeter fance is

(410 yd) × ($9.84 /yd) = $4034.40

i think it might be a but you might want a second opinion