What does AC equal to?

Answer:
AC=8.24
Step-by-step explanation:
In the figure given in the question we have to find AC.
Given:
BC=3
∠B=70° and
ΔACB is right-angled at C.
The best way to find the answer is by using trigonometry.
We know that tan of an angle is [tex]\frac{opposite\ side}{adjacent\ side}[/tex].
tan∠B = [tex]\frac{AC}{BC}[/tex]
AC = BCtan70°=3×tan70°
AC = 8.24 (rounding off to nearest hundredth).