# Chapter 7 - Trigonometric Identities and Equations - 7.5 Inverse Circular Functions - 7.5 Exercises - Page 707: 6

Fill the blank with ... $x$ ...

#### Work Step by Step

See page 704, using a calculator to evaluate $\sec^{-1}x...$ ... evaluate $\displaystyle \cos^{-1}\frac{1}{x}$ Fill the blank with ... $x$ ...

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