If X = 6 Sin $\theta$ , Use Trigonometric Substitution to Write

Multiple Choice

If x = 6 sin $\theta$ , use trigonometric substitution to write $\sqrt { 36 - x ^ { 2 } }$ as a trigonometric function of $\theta$ , where $0 < \theta < \frac { \pi } { 2 }$ .

A) 6 csc $\theta$
B) 6 sec $\theta$
C) 6 sin $\theta$
D) 6 cos $\theta$
E) 6 tan $\theta$