Answer:
AC ≈ 5.3 ( to the nearest tenth )
Step-by-step explanation:
Using the cosine ratio in the right triangle.
cos68° = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{AB}{AC}[/tex] = [tex]\frac{2}{AC}[/tex]
Multiply both sides by AC
AC × cos68° = 2 ( divide both sides by cos68° )
AC = [tex]\frac{2}{cos68}[/tex] ≈ 5.3
