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1. $\sec^{2} (\cot - 1 \sqrt{2}) - \sin^{2} (\cos^{- 1} 1)$

A. $\frac{1}{2}$
B. $\frac{1}{2}$
C. $\frac{1}{2}$
D. $\frac{1}{2}$

Answer: Option C

Explanation:

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