Saturday, November 19, 2011

How do you find a unit vector b perpendicular to another unit normal vector?

How do you find a unit vector b perpendicular to another unit normal vector, which is (4/5)i + (2/5)j - (3/5) k





your help would be much appreciated!





Thank you!|||A vector (4/5)i + (2/5)j - (3/5) k (say)





Then we should remember that the this vector is perpendicular to a plane ...


Then a vector perpendicular to this plane becomes impossible to find as they are infinite.





We cannot find a vector perpendicular to this one in particular..|||when the dot product of the two vectors equals zero, then they are perpendicular to each other

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