Find the Given Trigonometric Function of the Indicated Angle Using $a = 7 , b = 21 , c = 29$

Multiple Choice

Find the given trigonometric function of the indicated angle using triangle ABC. sin C, where $a = 7 , b = 21 , c = 29$

A) $\frac { 22 } { 29 }$
B) $\frac { 1 } { 3 }$
C) $\frac { 22 } { 9 }$
D) $\frac { 7 } { 29 }$
E) $\frac { 21 } { 29 }$