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The presence of tidal charge and a cosmological constant has considerableconsequences on the spacetime geometry and its study is much important from theobservational point of view. Henceforth, we investigate their effects onparticle dynamics and the shadow cast by a Randall-Sundrum braneworld blackhole with a cosmological constant. On studying the circular geodesics oftimelike particles, we have acquired the expressions of energy, angularmomentum and effective potential. We noted that the negative values of tidalcharge and cosmological constant decreases the energy of particles. Inaddition, the negative value of cosmological constant leads us to the stablecircular orbits, whereas its positive value destabilizes the circular orbits.Our exploration shows that the cosmological constant diminishes the radius ofthe black hole shadow. In response to the dragging effect, black hole rotationelongates its shadow toward the rotational axis. Besides, black hole spin andpositive charge distort shadow and its distortion become maximum as far as theblack hole rotates faster. We also discussed the energy emission rate byconsidering different cases and compared our result with the standard Kerrblack hole.

Geodesics and optical properties of rotating black hole in Randall-Sundrum brane with a cosmological constant