Many authors have examined various boundary behaviors of injective harmonic mappings in the open unit disk. Building on Laugesen's work, Bshouty and others explored the boundary behavior of harmonic mappings under different conditions. In this paper, we extend their work and find out the angular limits of the arguments and logarithms of analytic functions under various conditions. We also examined the dilatation possesses only a finite set of zeros within any stolz angle if the first derivative of harmonic function $f$ at the boundary is positive infinity.