\left. \begin array l \text value of \operatorname sec – InterviewSolution

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1.	\left. \begin array l \text value of \operatorname sec ^ - 1 ( \operatorname sec \frac 8 \pi 5 ) \text is : \\ \frac 8 \pi 5 \quad \phi ( b ) \frac 3 \pi 5 \quad \text (c) \frac 2 \pi 5 \text (d) \end array \right.
Answer» Option c is correct.

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