  Cherenkov light lateral distribution function (CLLDF) in Extensive Air
Showers (EAS) for different primary particles (e-, n , p, F, K and Fe) was
simulated using CORSIKA code for conditions and configurations of Yakutsk EAS
array with the fixed primary energy 3 PeV around the knee region at different
zenith angles. Basing on the results of CLLDF numerical simulation, sets of
approximated functions are reconstructed for different primary particles as a
function of the zenith angle. A comparison of the parameterized CLLDF with that
simulated with Yakutsk EAS array is verified. The parameterized CLLDF also is
compared with that measured on the Yakutsk EAS array.
