Let

Find a vector in such that the vectors , , , and are orthonormal.

I know orthogonal vectors are those that if multiplied together equal 0.

I know that orthonormal vectors are vectors that are orthogonal and have a unit length of 1.

So will have to be able to be multiplied by and equal 0 in order to be orthogonal and then it must have a unit length of 1.

I just am not sure how to solve this type of problem

Thank you for any help