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Acos

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Answer  
1.5707963267949
Explanation:
cos(Pi/2) = 0 so the (principal) arccosine of 0 is Pi/2, i.e. approximately 1.5707963267949

Parameter NameInputAn input expression?
x

Calculation description
Time-stamp calculation?  
  


Function Description

Returns the (principal) arccosine of a real number,  (, i.e. the value  () for which

 

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