Find the Exact Value of the Expression, If Possible $\cos \left( \tan ^ { - 1 } \frac { 1 } { 5 } \right)$

Multiple Choice

Find the exact value of the expression, if possible. Do not use a calculator.
- $\cos \left( \tan ^ { - 1 } \frac { 1 } { 5 } \right)$

A) $\frac { 5 \sqrt { 26 } } { 26 }$
B) $\frac { \sqrt { 26 } } { 5 }$
C) $\frac { 5 } { 26 }$
D) $\frac { 1 } { 5 }$