Evaluate the indefinite integral ∫11−x2dx\int \frac{1}{\sqrt{1-x^2}} dx∫1−x21dx.
arcsin(x)+C\arcsin(x) + Carcsin(x)+C
arccos(x)+C\arccos(x) + Carccos(x)+C
arctan(x)+C\arctan(x) + Carctan(x)+C
arcsec(x)+C\operatorname{arcsec}(x) + Carcsec(x)+C