## Precalculus (6th Edition) Blitzer

a) Please see below. b) Yes. c)$$x=-\frac{\pi }{3}$$The point is indicated by the blue point on the graph.
b) Since the function $y=\tan x$ is one-to-one on the restricted domain $(- \frac{\pi }{2}, \frac{\pi }{2})$, the function has an inverse.