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30-09-2016
Mathematics

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Limit of sec x as x approaches π/4

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30-09-2016

Hello,

[tex]$ \lim_{x \to \frac{\pi}{4} } \dfrac{1}{cos\ x}\\ = \dfrac{1}{ \dfrac{ \sqrt{2}}{2} } \\ =\dfrac{ 2}{\sqrt{2}}=\sqrt{2}\\ [/tex]

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