Final answer to the problem
$\sin\left(2u\right)+\cot\left(2u\right)\sin\left(2u\right)$
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Step-by-step Solution
Specify the solving method
1
Multiply the single term $\sin\left(2u\right)$ by each term of the polynomial $\left(1+\cot\left(2u\right)\right)$
$\sin\left(2u\right)+\cot\left(2u\right)\sin\left(2u\right)$
Final answer to the problem
$\sin\left(2u\right)+\cot\left(2u\right)\sin\left(2u\right)$