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How do you find the exact value of $cos (arccos (0.25))$ $cos(arccos(0.25))$ ?

1 Answer

Sep 26, 2017

$0.25$ $0.25$

Explanation:

$cos (arccos (0.25))$ $Cos(arccos(0.25))$

$:.=Cos(75.52248781^@) or 75^2 31'20.9''$

$:.=0.25$

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