Applicare l'identità trigonometrica: $\csc\left(\theta \right)$$=\frac{1}{\sin\left(\theta \right)}$

Applicare la formula: $a+\frac{b}{c}$$=\frac{b+ac}{c}$, dove $a=\sec\left(x\right)$, $b=1$, $c=\sin\left(x\right)$, $a+b/c=\sec\left(x\right)+\frac{1}{\sin\left(x\right)}$ e $b/c=\frac{1}{\sin\left(x\right)}$

Applicare la formula: $\frac{a}{\frac{b}{c}}$$=\frac{ac}{b}$, dove $a=\tan\left(x\right)+1$, $b=1+\sec\left(x\right)\sin\left(x\right)$, $c=\sin\left(x\right)$, $a/b/c=\frac{\tan\left(x\right)+1}{\frac{1+\sec\left(x\right)\sin\left(x\right)}{\sin\left(x\right)}}$ e $b/c=\frac{1+\sec\left(x\right)\sin\left(x\right)}{\sin\left(x\right)}$

Applicare la formula: $\frac{a}{a}$$=1$, dove $a=\tan\left(x\right)+1$ e $a/a=\frac{\left(\tan\left(x\right)+1\right)\sin\left(x\right)}{1+\tan\left(x\right)}$