Applying the trigonometric identity: $1+\tan\left(\theta \right)^2 = \sec\left(\theta \right)^2$

Applicare l'identità trigonometrica: $\sec\left(\theta \right)^n$$=\frac{1}{\cos\left(\theta \right)^n}$, dove $x=a$ e $n=2$

Applicare la formula: $\frac{a}{\frac{b}{c}}$$=\frac{ac}{b}$, dove $a=\tan\left(a\right)+\cot\left(a\right)$, $b=1$, $c=\cos\left(a\right)^2$, $a/b/c=\frac{\tan\left(a\right)+\cot\left(a\right)}{\frac{1}{\cos\left(a\right)^2}}$ e $b/c=\frac{1}{\cos\left(a\right)^2}$