$\frac{1}{\sin^2\left(x\right)-\cos^2\left(x\right)}=3$
$\left(\csc\left(y\right)-\cot\left(y\right)^2\right)$
$\lim_{x\to6}\sqrt{6-x}$
$-5+8z+24-17y$
$\csc^2x-1\sec^2x=\csc^2x$
$\left(7x+7y\right)^2$
$\left(c-8\right)\left(c-6\right)=0$
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