Arcsecant

arcsec(Real)

Given a number $x$ in the interval $(-\infty ,-1]\cup [1,+\infty )$, returns the angle whose secant is $x$. Returns a number in the interval $[0,\pi ]\setminus \left\{\frac{\pi }{2}\right\}$.

Arccosecant, Arccotangent, Secant