A turbomachine turbine blade, intended to be mounted around an axis of rotation, including a platform and a vane extending in a radial direction relative to the axis of rotation, going from the inside to the outside away from the platform and ending in a top, the vane comprising a leading edge and a trailing edge, located downstream of the leading edge, and the vane comprising a lower surface wall and an upper surface wall each connecting the leading edge to the trailing edge, the lower surface wall and the upper surface wall being connected to each other at the trailing edge by a trailing edge fillet, characterised in that it includes a cooling area which extends along the trailing edge, the cooling area comprising three distinct types of cooling orifices (25, 26, 27) formed through the wall of the vane to allow the circulation of a cooling flow from the inside to the outside of the vane, these three types of cooling orifices (25, 26, 27) being spaced from each other radially between the platform and the top, in that the blade includes, in the area at the root of the blade close to the platform, a first type of cooling orifices in the form of first cooling orifices formed in the thickness of the trailing edge fillet between the lower surface and upper surface walls, in that the blade includes, in the area at the top of the blade close to the top, a third type of cooling orifices in the form of third cooling orifices, distinct from the first orifices, formed in the thickness of at least one of the lower surface and upper surface walls, in that the blade includes, in the area in the middle of the blade, located between the area at the root of the blade and the area at the top of the blade, a second type of cooling orifices in the form of second cooling orifices, distinct from the first orifices and from the third orifices, formed in the thickness of said at least one of the lower surface and upper surface walls, in that, the cooling area of the trailing edge, the lower surface wall, the upper surface wall and the trailing edge fillet generally have the shape of a dihedral the shape of which is characterised by the radius of the trailing edge fillet and the spacing, opposite the trailing edge, between the lower surface wall and the upper surface wall, said spacing being defined by the distance between the lower surface and upper surface walls at a predefined distance from the trailing edge, and in that the spacing between the lower surface and upper surface walls and the radius of the trailing edge fillet are radially changing between the platform and the top of the blade, the values of the spacing and the radius of the trailing edge fillet changing in the radial direction. characterised in that it includes a cooling area which extends along the trailing edge, the cooling area comprising three distinct types of cooling orifices (25, 26, 27) formed through the wall of the vane to allow the circulation of a cooling flow from the inside to the outside of the vane, these three types of cooling orifices (25, 26, 27) being spaced from each other radially between the platform and the top, in that the blade includes, in the area at the root of the blade close to the platform, a first type of cooling orifices in the form of first cooling orifices formed in the thickness of the trailing edge fillet between the lower surface and upper surface walls, in that the blade includes, in the area at the top of the blade close to the top, a third type of cooling orifices in the form of third cooling orifices, distinct from the first orifices, formed in the thickness of at least one of the lower surface and upper surface walls, in that the blade includes, in the area in the middle of the blade, located between the area at the root of the blade and the area at the top of the blade, a second type of cooling orifices in the form of second cooling orifices, distinct from the first orifices and from the third orifices, formed in the thickness of said at least one of the lower surface and upper surface walls, in that, the cooling area of the trailing edge, the lower surface wall, the upper surface wall and the trailing edge fillet generally have the shape of a dihedral the shape of which is characterised by the radius of the trailing edge fillet and the spacing, opposite the trailing edge, between the lower surface wall and the upper surface wall, said spacing being defined by the distance between the lower surface and upper surface walls at a predefined distance from the trailing edge, and in that the spacing between the lower surface and upper surface walls and the radius of the trailing edge fillet are radially changing between the platform and the top of the blade, the values of the spacing and the radius of the trailing edge fillet changing in the radial direction.