Prove the following identity. csc cot e sin2 2 2 csc We begin by writing the right side of the equation in terms of sines and cosines using the Reciprocal and Ratio Identities. We can then write the compound fraction as a simple fraction, and use a Half-Angle Formula to simplify. csc cot e sin e sin 2 csc e 2 sin e sin e 2. sin e 2 e sin2

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A: It is an important part of statistics . It is widely used .

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.