Near future cosmology will see the advent of wide area photometric galaxy surveys, such as the PanSTARRS, DES and part of Euclid, that extend to high redshifts (z ~ 1.5 - 2) but with poor radial distance resolution. In such cases splitting the data into redshift bins and looking at angular clustering will become the standard approach to extract cosmological information or to study the nature of dark energy through the Baryon Acoustic Oscillations (BAO) probe. In this talk I will present a comprehensive model for this clustering signal at large angular scales including all relevant effects. One interesting outcome is the potential of future photometric surveys to yield constraints in the growth of structure through redshift space distortions (RSD). In addition RSD complements and alters the detectability of BAO. As a proof-of-concept we used the photometric catalog of luminous red galaxies (LRGs) in the latest data release (DR7) of the Sloan Digital Sky Survey II to show that both, BAO and RSD, can be robustly measured in imaging surveys with errors matching expectations.