We can relate the anglex, the leg 8.6 and the hypotenuse 12 by means of the cosine function, that is,
[tex]\cos x=\frac{8.6}{12}[/tex]which gives
[tex]\cos x=0.71666[/tex]By applying inverse cosine in both sides, we have
[tex]x=\cos ^{-1}(0.7166)[/tex]then, x is equal to
[tex]x=44.22\text{ degre}es[/tex]Then, by rounding to the nearest tenth, the answer is 44.2 degrees
