The document discusses graphs of trigonometric functions including sine, cosine, tangent, cotangent, cosecant, and secant. It is copyrighted material from Pearson Education and concerns Section 6.4 of a Prentice Hall textbook. The document only contains repeated copyright notices without any other substantive information.

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Section 6.4
Graphs of the Sine, Cosine,
Tangent, Cotangent,
Cosecant, and Secant
Functions

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