i just want to know in the below solution that how the unit vector prependicular to P and Q IS given by the below formula plz prove it or justify it?

Asked by  | 11th May, 2012, 11:37: AM

Expert Answer:

The dot product of two perpendicular vectors is zero
 
So (P) .( n cap) = 0
 
and Q. (n cap) = 0
 
The dot product of vector P with unit vector is zero as well with Q

Answered by  | 13th May, 2012, 08:10: PM

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