Write down the interval for the principal-value branch of each of the following functions and draw its graph: contexto.140 2 years ago Solution: Principal value branch of is
![\left[-\frac{\pi}{2}, \frac{\pi}{2}\right]](https://www.learnatnoon.com/s/wp-content/ql-cache/quicklatex.com-7b772fcce0fd9eb0deb0ca73febda3d8_l3.png "Rendered by QuickLaTeX.com")
