Let \( f(x)=\frac{|x+\pi|}{\sin x} \), then P (a) \( \mathrm{f}\lef...

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Let \( f(x)=\frac{|x+\pi|}{\sin x} \), then
P
(a) \( \mathrm{f}\left(-\pi^{+}\right)=-1 \)
W)
(b) \( \mathrm{f}(-\pi)=1 \)
(c) \( \lim _{x \rightarrow-\pi} f(x) \) does not exist
(d) \( \lim _{x \rightarrow \pi} f(x) \) does not exist
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