$\frac{\sin\left(3\right)-\sin\left(5\right)}{\cos\left(3\right)+\cos\left(5\right)}$

$\frac{\tan\left(x\right)\cdot\cot\left(x\right)}{1-2\cos^2\left(x\right)}$

$\cos\:\theta\:\left(\sec\:\theta\:-\cos\:\theta\:\right)$

$1.035^6$

$\left(x+2\right)\cdot2x+2$

$\frac{6}{6^3}^5$

$\lim_{x\to7}\left(\frac{sin\left(\frac{1}{t}-1\right)}{ln\left(\frac{3}{7}t-2\right)}\right)$