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acos

float acos ( float x );

Description

Computes the arccosine of real float value x.

NOTE	The Dynamic C functions deg and rad convert radians and degrees.

Parameters

x

Assumed to be between -1 and 1.

Return value

Arccosine of the argument in radians.
If x is out of bounds, the function returns 0 and signals a domain error.

Library

MATH.LIB

See also

cos, cosh, asin, atan