(1) Consider the the vectors (2, 1, 1,0,1) and (1,1, 0, 1, 2) in R5. (a) Use dot products to nd the angle between those two vectors. (b) Based on the answer you got, draw a 2-dimensional sketch of those vectors like we did in class, and draw the triangle formed by those two vectors. (That's all we can really do to sketch them since they live in R5 a) (c) Use the appropriate Gram determinant to compute the area of the triangle you sketched in (b)