Find an Algebraic Expression Equivalent To $\sec \left(\tan ^{-1} x\right)$ A) $\sqrt{x^{2}+1}$

question 47

Multiple Choice

Find an algebraic expression equivalent to $\sec \left(\tan ^{-1} x\right)$

• A) \(\sqrt{x^{2}+1}\)
• B) \(\frac{1}{\sqrt{x^{2}+1}}\)
• C) \(\frac{\sqrt{x^{2}+1}}{x}\)
• D) \(\sqrt{x^{2}-1}\)
• E) \(x^{2}+1\)

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