Summary
Inverse cosine.
Unit
Math387
Declaration
Function ArcCos(X: TSample): TSample;
Result
the inverse cosine of X. X must be between -1 and 1. The return value will be in the range
[-p/2,p/2], in radians for a real argument. To obtain an inverse cosine for X outside the interval [-1,1] use the complex version of the function.
Declaration
Function ArcCos(const X: TCplx): TCplx;
Result
the inverse cosine of complex argument X.
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