In a right triangle, the tangent of an angle is the length of the opposite side divided by the length of the adjacent side.
[tex]\tan\alpha=\dfrac{opposite}{adjacent}[/tex]
[tex]\dfrac{3}{2}=\dfrac{opposite}{adjacent}\to opposite=3,\ adjacent=2[/tex]
therefore your answer is:
[tex]C.\ \tan C[/tex]
