find 2 perpendicular vectors that each is perpendicular to W

[spdrmncoo]

hi
can you help me? :?:
find 2 perpendicular vectors U and V such that each is perpendicular to W = <-4, 2, 5>
thanks

 

[daon]

Let A, B be arbitrary, non-zero elements in R³.

Then Let U = W x A, V = W x B.

Then U, V are perpendicular to W