Simplify $\sin\left(\theta\right)\cos\left(\theta\right)\left(\tan\left(\theta\right)+\cot\left(\theta\right)\right)$ using the trigonometric identity: $\sin(2x)=2\sin(x)\cos(x)$
Multiply the single term $\frac{\sin\left(2\theta\right)}{2}$ by each term of the polynomial $\left(\tan\left(\theta\right)+\cot\left(\theta\right)\right)$
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