Vector problem: for what values are a and b perpendicular?

G

Guest

Guest
For what values of p are a= pi - 2j + k and b = 2pi + pj - 4k perpendicular?

thanks in advance
 
Hint: Perpendicular means "with a 90° angle between them". What then would be the value of a particular vector product?

Eliz.
 
Top