  The absorption cross section of rotating black holes in the Randall-Sundrum
brane-world scenario for massless scalar waves is obtained via the partial-wave
method. A variety of incidence directions with respect to the black hole
rotation axis is considered. Special attention is given to near-extreme black
holes, in which cases the absorption cross section increases as the tidal
charge becomes more negative. It is shown that black holes with different
configurations can present capture cross sections/shadows of same size.
However, in such cases, the absorption spectra are different mainly for small
frequencies. Numeric results are compared with the capture cross sections in
the high-frequency limit, and with the black hole area in the low-frequency
limit showing good agreement.
