Hi, I'm wondering if anyone knows how to input a unit vector that lies between X and Y axes, into a Master Physics answering box. One of the questions I'm working on required a unit vector (to point a direction) to be part of the answer. I know that the direction is between the X and Y axes so I tried using (sqrt0.5,sqrt0.5,0) as my unit vector but that didn't work out. It seems that they want the the unit vector in terms of x_unit, y_unit, z_unit (in mastering physics x_unit = x capped/x with a hat). Any helps would be greatly appreciated.