Answer:
Step-by-step explanation:
Ratio of Cos C using the trigonometric ratios formula, would be:
Adjacent = BC = 40
Hypotenuse = AC = 41
Plug in the values
64
-1/2
2(x-4)=6x-6
2x-8=6x-6
2x-6x-8=-6
-4x-8=-6
-4x=-6+8
-4x=2
x=2/-4
simplify
x=-1/2
Answer: 2