28 points
Step-by-step explanation
42=2x+x
42=3x
14=x
2x=28
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