The derivative of \( \cot x \) at \( x=45^{\circ} \) is \( \mathrm{...

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The derivative of \( \cot x \) at \( x=45^{\circ} \) is
\( \mathrm{P} \)
(1) -2
(2) 2
W
(3) 4
(4) -4
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