$\frac{\cos\left(x\right)\cos\left(y\right)-\sin\left(x\right)\sin\left(y\right)}{\cos\left(x\right)\cos\left(y\right)}=1-\tan\left(x\right)\tan\left(y\right)$

$\tan\left(x\right)\cdot\left(\tan\left(x\right)-2\right)=6$

$-10.2+4x=26$

$\left(x^2+b\right)^7$

$\cot\left(x\right)=-\csc\left(x\right)$

$9\sec\left(x\right)^3+\csc\left(x\right)^2=\frac{1}{\sin\left(x\right)^2\cdot\cos\left(x\right)^2}$

$\left|-14-\left(-1\right)\right|$