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Tan






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Elementary Functions > Tan[z] > Introduction to the trigonometric functions





General


The six trigonometric functions sine , cosine , tangent , cotangent , cosecant , and secant are well known and among the most frequently used elementary functions. The most popular functions , , , and are taught worldwide in high school programs because of their natural appearance in problems involving angle measurement and their wide applications in the quantitative sciences.

The trigonometric functions share many common properties.





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