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ACOS

The ACOS(a) function calculates the arc cosine of an expression a.

The expression a must be of absolute value less than or equal to 1. The value returned by ACOS lies in the range [0,] (that is, 0 ≤ ACOS(a) ≤ Π).

Format

ACOS(a)

Arguments

a Any valid function expression.
  Number of Arguments: 1


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