The value of \( \cos 2 \theta \) in terms of \( \cot \theta \) is P...

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The value of \( \cos 2 \theta \) in terms of \( \cot \theta \) is
P
(a) \( \frac{\cot ^{2} \theta+1}{\cot ^{2} \theta-1} \)
(b) \( -\frac{1+\cot ^{2} \theta}{\cot ^{2} \theta-1} \)
(c) \( \frac{\cot ^{2} \theta-1}{\cot ^{2} \theta+1} \)
(d) \( \frac{1-\cot ^{2} \theta}{1+\cot ^{2} \theta} \)
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