The arccosine function, denoted as arccos(x), is the inverse function of the cosine function. It gives the angle whose cosine is x. The domain of the arccosine function is [-1, 1] and its range is [0, ].
The graph of the arccosine function is a curve that starts at the point (-1, ) and ends at the point (1, 0). The curve is symmetric about the y-axis.
