Clark University
Clark University: Dave's Short Trig Course: Trigonometric Functions
The Clark University site shows and explains the graphs of the six trigonometric functions. It explains how to find an arbitrary angle measurement using trig. Also, it explains that sine and cosine functions are complementary.
CK-12 Foundation
Ck 12: Trigonometry: Sine and Cosecant Graphs
[Free Registration/Login may be required to access all resource tools.] Define the sine and cosecant graphs using a unit circle.
Interactive Mathematics
Interactive Mathematics: Graphs of Tangent, Cotangent, Secant, and Cosecant
The tutorial explores the graphs of the tangent, cotangent, secant, and cosecant functions. The resource consists of animations and examples.
Wolfram Research
Wolfram Math World: Cosecant
Graphs of the cosecant function, both 2-dimensional and 3-dimensional. This site from Math World tells the relation between cosecant and sine. If you are not familiar with the sine function there is a link for a better understanding....
Interactive Mathematics
Interactive Mathematics: Graphs of Tan, Cot, Sec, & Csc
Several examples are presented that demonstrate how to graph the tan, cot, sec, and csc functions.