How to find the angle between vectors

Find the vector x, knowing that it is perpendicular to the vectors a and b and satisfies the cond...

Find a vector x that is collinear to a vector a and satisfies the condition x∙a=3.

1. My grandmother was a small girl on her family’s farm when she slipped into a running harvester. The machine was already spinning, sharp metal everywhere, and adults screamed because everyone knew what happens inside those blades. But when they pulled her out, she didn’t have a single cut. Not a bruise. Not a scrape. People stood around in silence, unable to understand how a child could go through a machine like that and come out untouched. 2. Her parents kept repeating the same words: “She sh