Graphs of the Tangent, Cotangent, Secant & Cosecant Functions

The University of Idaho provides an online resource.  These lectures are only viewable by those with DSL or cable modems.  Real Player, a free download, is required to see these videos
The graph of f(x) = tan x

Taft College provides this video that also requires Real Player.

Dr. Jacci White of St. Leo University recorded this video that also requires Real Player.

The graphs of y = tanx, y = cotx, y = secx, and y = cscx