Use the Figure to Find the Exact Value of the Trigonometric

Multiple Choice

Use the figure to find the exact value of the trigonometric function. $$\begin{array} { l } a = 12 , b = 3 \\c = 5 , d = 4\end{array}$$
Cos 2 $\beta$

A) $\frac { 41 } { 5 }$
B) $\frac { 3 } { 10 }$
C) $\frac { 9 } { 41 }$
D) $\frac { 12 } { 13 }$
E) $\frac { 41 } { 9 }$