Question 393679
The ratio for tangent is opposite over adjacent. Sketching this triangle may help you understand how to do this problem.<br>
Since AB is the longest side it must be the hypotenuse. This makes angle C the right angle. So draw a triangle with C being a right angle and with the sides being the lengths given.<br>
Looking at this triangle you should be able to see that the opposote side for angle B is AC (or 12) and the adjacent side for angle B is BC (or 5) So this makes:
tan(B) = 5/12