4. Graphs of tan, cot, sec and csc - Interactive Mathematics - Learn math while you play with it!
(For more on periodic functions and to see `y = tan x` using degrees, rather than radians, see Trigonometric Functions of Any Angle.) The Graph of y = cot x Recall from Trigonometric Functions that: `cot x=1/tanx = (cos x)/(sin x)` We now have to consider...