$\sin\left(5.831\right)\:\:\cos\left(30.96\right)\:\tan\left(59.04\right)$

$\lim_{x\to0}\left(x^2-64sin3x\right)$

$5+2^2-1^3-2$

$\sqrt[4]{81b^3}c$

$\int\frac{x+2}{2x^2+x-6}dx$

$\frac{cos\:t\:}{1\:-\:sin\:t}=\frac{1\:+\:sin\:t}{cos\:t}$

$\frac{2}{3}x^2\:.\:\frac{3}{4}x$