Use the Trigonometric Substitution to Rewrite the Algebraic Expression as a Trigonometric

Multiple Choice

Use the trigonometric substitution to rewrite the algebraic expression as a trigonometric function of $\theta$ , where $0 < \theta < \frac { \pi } { 2 }$ . $\sqrt { 11 - x ^ { 2 } } , x = \sqrt { 11 } \sin \theta$

A) $- \sqrt { 11 } \cos \theta$
B) $\sqrt { 11 } \cos \theta$
C) $\sqrt { 11 } \sin \theta$
D) $11 \cos \theta$
E) $11 \sin \theta$