A thin prism of angle $$6^\circ$$ and refractive index for yellow light $$(n_Y) = 1.5$$ is combined with another prism of angle $$5^\circ$$ and $$n_Y = 1.55$$. The combination produces no dispersion. The net average deviation $$\delta$$ produced by the combination is $$\left(\frac{1}{x}\right)^\circ$$. The value of $$x$$ is _____