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How do you solve $2 cos - 1 x = π$ $2 cos-1 x = pi$ ?

1 Answer

Apr 21, 2016

$S = {}$ $S={ }$

Explanation:

$2 cos (- x) = π$ $2cos(-x)=pi$

$cos (x) = \frac{π}{2}$ $cos(x)=pi/2$

$x = {cos}^{- 1} (\frac{π}{2})$ $x=cos^-1(pi/2)$

$x =$ $x=$ undefined

$S = {}$ $S={ }$

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