$\frac{\sin^2x+1}{\cos x}+\cos\left(x\right)$

$\cos\left(a\right)+\cot\left(a\right)=\frac{\sin\left(a\right)}{1-\cos\left(a\right)}$

$8.93+0.16$

$\csc^2x+1=-\cot^2x$

$\left(2cosx-2secx\right)\left(cos^2x+sec^2x+1\right)$

$-5+\frac{2}{3}>-\frac{1}{2}x-1$

$\left(7a-b+c\right)^2$