One of Sin X, Cos X, and Tan X Is $\sin x = - \frac { \sqrt { 3 } } { 2 } , \quad x$

Multiple Choice

One of sin x, cos x, and tan x is given. Find the other two if x lies in the specified interval.
- $\sin x = - \frac { \sqrt { 3 } } { 2 } , \quad x$ in $\left[ - \frac { \pi } { 2 } , 0 \right]$

A) $\cos x = \frac { 1 } { 2 } , \tan x = - \sqrt { 3 }$
B) $\cos x = - 2 , \tan x = \frac { \sqrt { 3 } } { 3 }$
C) $\cos x = \frac { 1 } { 2 } , \tan x = \sqrt { 3 }$
D) $\cos x = - \frac { 1 } { 2 } , \tan x = - \sqrt { 3 }$