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    simplify trigonometric expression

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    Use an identity to write each expression as a single trigonometric function value or as a single number.
    2* tan15 /(1 - (tan15)^2)

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    https://brainmass.com/math/basic-algebra/simplify-trigonometric-expression-83557

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    Solution Summary

    The solution explains how to simplify the trigonometric expression to a single function or number using the trigonometric identity, such as half angle formula, double angle formula.

    $2.49

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