PLEASE HELP!! A.S.A.P!!!

What is the tangent ratio for
[tex] \tan( a) [/tex]
A.)
[tex] \frac{2}{ \sqrt{13} } [/tex]


B.).
[tex] \frac{2}{3} [/tex]


C.)
[tex] \frac{ \sqrt{13} }{2} [/tex]


D.)
[tex] \frac{3}{2} [/tex]
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