Let θ Be an Angle in Standard Position $\cos \theta = \frac { 2 } { 5 } , \quad \tan \theta < 0$

Multiple Choice

Let θ be an angle in standard position. Name the quadrant in which the angle θ lies.
- $\cos \theta = \frac { 2 } { 5 } , \quad \tan \theta < 0$
Find $\sin \theta$ .

A) $- \frac { \sqrt { 21 } } { 5 }$
B) $- \frac { \sqrt { 21 } } { 2 }$
C) $- \frac { 5 } { 2 }$
D) $- \sqrt { 21 }$