Let be an arbitrary vector and let be a unit vector in some fixed direction. Show that .

For this type of problem would I just multiply everything out in the RHS and simplify?

So .

So ?

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- Nov 26th 2007, 03:57 PMshilz222Arbitrary vector
Let be an arbitrary vector and let be a unit vector in some fixed direction. Show that .

For this type of problem would I just multiply everything out in the RHS and simplify?

So .

So ? - Nov 26th 2007, 04:41 PMPlato
Here is a basic fact: .

In other words, is a linear combination of&*B*.*C*

Now apply that with this:

Can you see how to finish?