[en] Vortex lattice melting in the Hperpendicularc configuration of an YBa₂Cu₃O_6.94 single crystal has been investigated by means of the ac susceptibility χprime-iχdouble_prime and the magnetic torque τ. The melting transition of vortex lattice occurs in Hperpendicularc, too. Since the torque curve shows a sharp peak in the irreversible torque at θ_c ≅ 90degree due to intrinsic pinning at lower temperatures, the authors can determine the irreversibility line for the intrinsic pinning. The melting transition in the Hperpendicularc configuration appears at temperatures where the intrinsic-pinning peak is absent. They consider that the intrinsic pinning does not affect the nature of the vortex melting transition in the Hperpendicularc configuration