Vector Question

No.12418357 ViewReplyOriginalReport
Lets say you had a vector k(1,1,1) in R^3

Lets say x',y',z' represent a orthonormal basis by rotating cartesian coordinates (i,j,k) by theta and phi with z' = k[1,1,1], k =1/(sqrt(3))

Find a vector with length sqrt(3) by rotating 120 degrees from x'+ to y'+