Answer: 66.4
Step-by-step explanation:
The trig ratio you would use is inverse cosine or [tex]cos^{-1}[/tex].
Cos is adjacent/hypotenuse
So, the ratio you would use is [tex]cos^{-1}[/tex] [tex]\frac{2}{5}[/tex].
Insert this in a calculator which come out to be 66.421821522.
But you have to round, so you answer is 66.4.
