Question

what is the approximate value of x in the diagram below hint you will need to use one of the trigonomic ratios given in the table

Answer 1

The answer is

E.20.89

Answer 2

Let's use 40° as our angle for this problem. Since we have the adjacent side and need the hypotenuse, we will use the cosine trig in this problem.

cos(40°) = adjacent/hypotenuse = 16/x
cos (40°) = 16/x
x·cos (40°) = 16
x = 16/cos(40°)
x = 16/0.766
≈20.89 or E