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How do you evaluate ${sec}^{- 1} (sec (\frac{π}{10}))$ $sec^-1(sec((pi)/10))$ ?

1 Answer

A. S. Adikesavan

Jul 30, 2016

$\frac{π}{10}$ $pi/10$

Explanation:

Use $f^{- 1} f (x) = x$ $f^(-1)f(x)=x$ .

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