Minimum value of \( \cos \theta \) for \( -\pi \leq \theta \leq \pi...

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Minimum value of \( \cos \theta \) for \( -\pi \leq \theta \leq \pi \)
P
(A) -1
(B) +1
(C) 0
(D) \( \frac{1}{2} \)
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