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How do you simplify $arccos (sin (\frac{π}{8}))$ $arccos(sin(pi/8))$ ?

1 Answer

Aug 4, 2016

$= 67.5$ $=67.5$

Explanation:

${cos}^{- 1} (sin (\frac{π}{8}))$ $cos^-1(sin(pi/8))$
$= {cos}^{- 1} (0.383)$ $=cos^-1(0.383)$
$= 67.5$ $=67.5$

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