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

question 55

Multiple Choice

Use the trigonometric substitution to rewrite the algebraic expression as a trigonometric function of $\theta$ , where $0 < x < \frac { \pi } { 2 }$ .
$\sqrt { 16 - x ^ { 2 } } , x = 4 \cos \theta$

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