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Declaration: double acos(double x); Returns the arc cosine of x in radians. Range: The value x must be within the range of -1 to +1 (inclusive). The returned value is in the range of 0 to pi (inclusive).
Declaration:
double acos(double x); Returns the arc cosine of x in radians.
double acos(double
);
Returns the arc cosine of x in radians.
Range:
The value x must be within the range of -1 to +1 (inclusive). The returned value is in the range of 0 to pi (inclusive).
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