4. (20 pts) The set of measured 3D parallel-beam projection directions is given by 2 = {0:0 = (cos, sin ,0), 51015 (a) Does 2 provide sufficient data for tomographic reconstruction? (b) If not, find the region in Fourier space where F(V, V.,,v.) is NOT measured by the projections. Make sure your answer is complete. 4. (20 pts) The set of measured 3D parallel-beam projection directions is given by 2 = {0:0 = (cos, sin ,0), 51015 (a) Does 2 provide sufficient data for tomographic reconstruction? (b) If not, find the region in Fourier space where F(V, V.,,v.) is NOT measured by the projections. Make sure your answer is complete