Apply the trigonometric identity: $1+\cot\left(\theta \right)^2$$=\csc\left(\theta \right)^2$
$\csc\left(x\right)^2$
Why is cot(x)^2+1 = csc(x)^2 ?
2
Apply the trigonometric identity: $\csc\left(\theta \right)^n$$=\frac{1}{\sin\left(\theta \right)^n}$, where $n=2$
$\frac{1}{\sin\left(x\right)^2}$
Final answer to the problem
$\frac{1}{\sin\left(x\right)^2}$
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Simplification of trigonometric expressions consists of rewriting an expression with trigonometric functions in a simpler form. To perform this task, we usually use the most common trigonometric identities, and some algebra.