Recent content by d.almont23

Find the angle between the diagonal of the back and left faces of a cube with one vertex on the origin A) 60 degrees B) cos^-1(1/sqrt(6)) C) cos^-1(1/3*sqrt(2)) D) 90 degrees E) 120 degrees The two diagonals eminate from the vertex at the origin. I will write [u] to mean the "norm"...