$\frac{1}{5}x-2=4$

$\log\left(x+8\right)=\log\left(x\right)+\log\left(x+3\right)$

$-4=\csc\left(\theta\right)$

$\cos\left(t\right)\left(1+\tan^2t\right)$

$csc\left(2\right)j\:+\:cot\left(2\right)j$

$\lim_{x\to\infty}\left(\frac{e^x-2.cos\left(x\right)+e^{-x}}{x.\sin\left(x\right)}\right)$

$\frac{d}{dx}\left(\frac{1+\sin\left(x\right)}{x\cdot\cos\left(x\right)}\right)$