Here is the graph of tangent inverse, also called Arctan.
Domain: all real numbers (think of these numbers as the slope of a line.)
Co-domain: (-pi/2, pi/2) (These numbers refer to angles in the first and fourth quadrants, as well as the angle 0, which lies between the two quadrants.)
Domain: [-1, 1]
Co-domain: [-pi/2, pi/2]
Domain: [-1, 1]
Co-domain: [0, pi]
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