Simplify a trigonometric expression using even and odd identities

The video tutorial explains how to simplify the expression sine of negative X times cotangent of negative X using even and odd identities. It covers the properties of sine and cotangent as odd functions and demonstrates how to rewrite cotangent in terms of sine and cosine. The tutorial concludes by simplifying the expression to cosine of X, highlighting the use of even and odd identities in the process.

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