
#1
Jan2709, 11:22 PM

P: 59

1. The problem statement, all variables and given/known data
Show that vector orth of b onto a=bproj of b onto a is orthogonal to a. I totally don't know where to start :( and I don't know hat orth of b onto a means... 



#2
Jan2809, 03:12 AM

Sci Advisor
HW Helper
P: 4,301

Do you remember what the dot product ([itex]\vec a \cdot \vec b[/itex]) meant geometrically? 


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