$${ \left((A+b \cos x) \tan y \right) }^{ 2 } + { \left(A+b \cos x \right) }^{ 2 }$$
$\left(\frac{b\cos(x)+A}{\cos(y)}\right)^{2}$
$\frac{\left(b\cos(x)\right)^{2}+2Ab\cos(x)+A^{2}}{\left(\cos(y)\right)^{2}}$
