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c o t^{1} x = \sin^{- 1} y

এর মান কোনটি/

\frac{1}{\sqrt{1 + x^{2}}}

\sqrt{1 + x^{2}}

\frac{1}{\sqrt{1 - x^{2}}}

\sqrt{1 - x^{2}}

ANS : 1

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