$14\cdot11$

$11.20^2$

$\frac{sin\left(x\right)+sin\left(y\right)}{csc\left(x\right)+csc\:\left(y\right)}=sin\left(x\right)sin\left(y\right)$

$6x^2+-12+-2$

$x^2-3x+1.5$

$\sin\left(o\right)\left(\cot\left(o\right)+\tan\left(o\right)\right)=\sec\left(o\right)$

$15\left(-23+\:6\right)\:$