\( \cos ^{-1}\left[\cos \left\{2 \cot ^{-1}(\sqrt{2}-1)\right\}\right] \) बराबर है
(A) \( \sqrt{...
\( \cos ^{-1}\left[\cos \left\{2 \cot ^{-1}(\sqrt{2}-1)\right\}\right] \) बराबर है
(A) \( \sqrt{2}-1 \)
(B) \( \frac{3 \pi}{4} \)
(C) \( \frac{\pi}{4} \)
(D) इनमें से कोई नहीं
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