How to evaluate a trigonometric function using reference angle? you can pick

How to choose which trig function to use based on an angle? I'm assuming that's simpler form of the question hehe

Step-by-step explanation:

pick an angle, and look at the sides that you HAVE

if you have the side opposite to the angle, and the hypotenuse of the triangle you use sine.

if you have the side adjacent to said angle, and the hypotenuse, you use cosine.

and if you don't have the hypotenuse, but you have the other two sides, you use tangent.

$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