Sharp Bohr-Type inequalities for certain classes of close-to-convex functions

Abstract: In this article, we determine the Rogosinski radii for certain subclasses of close-to-convex functions defined on open unit disc $\mathbb{D}= {z \in \mathbb{C}: |z| < 1}$. Furthermore, we establish improved versions of the classical Bohr inequality and the Bohr-Rogosinski inequality pertaining to these subclasses. We demonstrate that all results derived in the study are sharp.