An online calculator to calculate inverse secant function arcsec(x) in radians and degrees. The graph of y = arcsec(x) is shown below and it has the horizontal asymptote \( y = \dfrac{\pi}{2} \) defined as
\( \lim_{x\to-\infty} arcsec(x) = \dfrac{\pi}{2} \)      and      \( \lim_{x\to 0} arcsec(x) = \dfrac{\pi}{2} \)
The domain of y = arcsec(x) is given by:      \( -\infty \lt x \le -1 \quad \cup \quad 1 \le x \lt \infty \)
The range of y = arcsec(x) is given by:       \( 0 \le y \lt \dfrac{\pi}{2} \quad \cup \quad \dfrac{\pi}{2} \lt y \le \pi \)

How to use the arcsec (x) calculator

You may use it to explore the domain and range of arccot(x).