Uprav nasledujúci výraz:
\( \normalsize\frac{\sin x}{\sin y}+\frac{\cos x}{\cos y} \)
\( \large\frac{2\cos\left(x+y\right)}{\sin2y} \)
\( \large\frac{2\sin\left(x+y\right)}{\cos2y} \)
\( \large\frac{2\sin\left(x+y\right)}{\sin2y} \)
\( \large\frac{2\sin\left(x-y\right)}{\sin2y} \)