Suppose That $\theta$ Is in Standard Position and the Given Point Is on Point

Multiple Choice

Suppose that $\theta$ is in standard position and the given point is on the terminal side of $\theta$ . Give the exact value of the
indicated trig function for $\theta$
- $( 21,28 )$ ; Find $\sin \theta$ .

A) $\frac { 4 } { 3 }$

B) $\frac { 3 } { 4 }$

C) $\frac { 4 } { 5 }$

D) $\frac { 3 } { 5 }$