Find the quotient show how the decimal point is moved in the divisor and the dividend check by multiplication

The correct answer to this question is this one:  tan(θ) = AB/AC = 4/3

It is a very simple problem.
The only thing you have to apply are the definitions. 
In a right triangle, tan of an angle = opposite side/adjacent side. 

ii) Here ABC is a right triangle, with <A = 90 deg. and (θ) being the angle C. 
So tan(θ) = AB/AC = 4/3