For any unit vector, the vector Q _ ~ p and Q are perpendicular to each other, and the cross product of p and Q is perpendicular to the Y axis?

there is a unit vector p (x _ 1)
to find the vector Q (x _ 1 ~ y _ 1 ~ Z1)

p and Q are perpendicular to each other, and the cross product of p and Q is perpendicular to the Y axis.
how to find Q?

Apr.07,2021
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