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How do you evaluate ${sin}^{- 1} (sin (\frac{7 π}{4}))$ $sin^-1(sin((7pi)/4))$ ?

1 Answer

A. S. Adikesavan

Jul 29, 2016

$\frac{7 π}{4}$ $(7pi)/4$

Explanation:

Use $f^{- 1} f (a)) = a$ $f^(-1)f (a)) = a$

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