Question

If a vector is equal to n icap -jcap + 2kcap and b vector =-2icap -2jcap -kcap are perpendicular to each other then the value of n is
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Answer 1

Answer:

n= 0

Explanation:

as both vectors are perpendicular to each other so there dot product must be equal to zero .

by using this property we solve the above question and answer came -2n=0

as -2 is constant so it can never be zero it's mean n=0.