$\frac{\tan\left(\theta\right)+\cos\left(\theta\right)}{\sin\left(\theta\right)}=\sec\left(\theta\right)+\cot\left(\theta\right)$

$144x^4-y^6$

$-4\left(a+3\right)$

$\int\sin\left(4x\right)^3sen\:\left(4x\right)dx$

$1-13.7\left(c-2d\right)+x\left(c-2d\right)$

$-3\csc x\cot x+8\csc^{2}x$

$tan\left(x\right)\:sin\left(2x\right)=1\:+\:cos\left(2x\right)$