In: Math
A rectangular box has a length of 1 in, width of 2 in, and height of 3 in. Find the cosine of the angle between the diagonal of the box and the diagonal of its base.
what is the volume of the parallelepiped by <-5; 2; 1>, <1; -1; -3> and
<-1; -1; -4>?
(a) 9 (b) 10 (c) 11 (d) 12 (e) None of the above