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Evaluate the Integral $\int _ { - \pi } ^ { \pi } \sqrt { \frac { 1 + \cos x } { 2 } } d x$

Question 107

Multiple Choice

Evaluate the integral.
- $\int _ { - \pi } ^ { \pi } \sqrt { \frac { 1 + \cos x } { 2 } } d x$

A) 4
B) 1
C) 0
D) 2

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