Point P Is on the Terminal Side of θ $\mathrm { P } ( 21,28 )$

Multiple Choice

Point P is on the terminal side of θ . Evaluate the six trigonometric functions for θ. If the function is undefined, write "undefined."
- $\mathrm { P } ( 21,28 )$ ; find $\sin \theta$ .

A) $\frac { 4 } { 3 }$
B) $\frac { 3 } { 5 }$
C) $\frac { 4 } { 5 }$
D) $\frac { 3 } { 4 }$