Which equation can be used to find the measure of angle gfe?

cos−1 = θ

cos−1 = θ
sin−1 = θ
sin−1 = θ

the complete question is

Which equation can be used to find the measure of angle GFE?

cos−1[14.5/11.9 ]= θ

cos−1[11.9/14.5] = θ

sin−1[11.9/14.5] = θ

sin−1[14.5 /11.9]= θ

we know that

in the right triangle FGE

cos θ=adjacent side angle θ /hypotenuse

adjacent side angle θ=FE--------->

hypotenuse=FG-------->

so

cos θ=

θ=arc cos()

therefore

the answer is the option

cos−1[] = θ

answer: the equation matches the regression

step-by-step explanation:

4 and 5)16.97 or 12√2

6)15.59 or 9√3

7)y = 15.59 or 9√3     x =27

8)17.80