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$\cot (\frac{π}{4} + θ) \cot (\frac{π}{4} - θ) =$

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Correct option is C

cotθ−1cotθ+1.cotθ+1cotθ−1=1

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cotπ4+θcotπ4−θ=

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$\cot (\frac{π}{4} + θ) \cot (\frac{π}{4} - θ) =$