solid state physics

2:(10 points):Given the 2 dimensional lattice points with the same basis, e distance between any two atoms is 2A", the angle shown in the figure is 3. 60 a) Find the primitive lattice vectors for the chosen unit cell? @.az) with respect to i and b) Find the reciprocal lattice vector? (b. b) with respect to i and ). c) Find the first three reciprocal vectors? (G) d) Draw these planes correspond to these reciprocal vectors? e) Find the angles correspond to one of the above planes if i = 1.54A