SOLUTION: Use the half angle formula to simplify the expression √((1+cos4x)/2)

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Question 814946: Use the half angle formula to simplify the expression √((1+cos4x)/2)

Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
Use the half angle formula to simplify the expression √((1+cos4x)/2)
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cos%28s%2F2%29=sqrt%28%281%2Bcos%28s%29%29%2F2%29
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sqrt%28%281%2Bcos%284x%29%29%2F2%29=cos%284x%2F2%29=cos%282x%29