pls help quickly! i appreciate it :)

Answer:
AC = 5.03459
Step-by-step explanation:
SOH CAH TOA
Sine is the opposite / hypotenuse
Cosine is the adjacent / hypotenuse
Tangent is the opposite / adjacent
We are not given the hypotenuse side length so sin and cos can't be used
? is the opposite side length of the angle given so
tan(x°) = AC / BC
tan(40°) = ? / 6
multiply both side by 6
6? / 6 = 6tan(40°)
? = 6tan(40°)
? = 5.03459
Learn more about Unknown Side Lengths here: https://brainly.com/question/20353562