$\cos\left(30\right)\cdot\frac{2\tan\left(30\right)}{\sin\left(45\right)}$

$cos^2\left(x\right)+sin^2\left(x\right)\cdot\:\:sin^2\left(y\right)+sin^2\left(x\right)\cdot\:\:cos^2\left(y\right)=1$

$x^2+2xy+y^2-16$

$\int\left(1+\cos^2\left(x\right)\right)^2dx$

$imybh7hyujik$

$2759+\left(-1146\right)+12$

$\frac{6b^{-4}\:c^{-8}\:}{2b^2\:c^{-2}}$