$\frac{\cos\left(\theta\right)}{\sec\left(\theta\right)}$
$\frac{dx}{dt}=\sin\left(x+t\right)$
$\lim_{x\to0}\left(\frac{\sin\left(w-x\right)-\sin\left(w\right)}{x}\right)$
$345-572$
$\left(3a^3+7b^4\right)^3$
$\left(1+x\right)\left(4\right)$
$x^2+10x+x$
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