- #1
Usernam
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So my book says
Lets suppose,
We have two vector v and u
w=projection of u ev= unit vector θ=angle between the two
w=(u.ev)ev or w=( (u.v)/(v.v) )v
Now, the second equation is fairly easy to understand if we understand the first one because ev= v / |v|
What is bothering me is I have no idea why w=(u.ev)ev.
It would be more reasonable, as per me, if w=(u.ev)
But that is not the case.
Why is that extra ev lingering around in the equation.
ANY IDEAS?
Lets suppose,
We have two vector v and u
w=projection of u ev= unit vector θ=angle between the two
w=(u.ev)ev or w=( (u.v)/(v.v) )v
Now, the second equation is fairly easy to understand if we understand the first one because ev= v / |v|
What is bothering me is I have no idea why w=(u.ev)ev.
It would be more reasonable, as per me, if w=(u.ev)
But that is not the case.
Why is that extra ev lingering around in the equation.
ANY IDEAS?